diff --git a/src/main/java/clap/server/adapter/inbound/web/admin/FindLabelAdminController.java b/src/main/java/clap/server/adapter/inbound/web/admin/FindLabelAdminController.java
new file mode 100644
index 00000000..a0079492
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/admin/FindLabelAdminController.java
@@ -0,0 +1,34 @@
+package clap.server.adapter.inbound.web.admin;
+
+import clap.server.adapter.inbound.security.SecurityUserDetails;
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
+import clap.server.application.port.inbound.label.FindLabelListUsecase;
+import clap.server.common.annotation.architecture.WebAdapter;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.annotation.Secured;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import java.util.List;
+
+@Tag(name = "05. Admin")
+@WebAdapter
+@RequiredArgsConstructor
+@RequestMapping("/api/managements/label")
+public class FindLabelAdminController {
+
+    private final FindLabelListUsecase findLabelListUsecase;
+
+    @Operation(summary = "구분 목록 조회 API")
+    @Secured({"ROLE_ADMIN"})
+    @GetMapping
+    public ResponseEntity<List<FindLabelListResponse>> findLabelList(
+            @AuthenticationPrincipal SecurityUserDetails userInfo) {
+        return ResponseEntity.ok(findLabelListUsecase.findLabelListAdmin(userInfo.getUserId()));
+    }
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/dto/label/FindLabelListResponse.java b/src/main/java/clap/server/adapter/inbound/web/dto/label/FindLabelListResponse.java
new file mode 100644
index 00000000..4bb0024f
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/dto/label/FindLabelListResponse.java
@@ -0,0 +1,10 @@
+package clap.server.adapter.inbound.web.dto.label;
+
+import clap.server.adapter.outbound.persistense.entity.task.constant.LabelColor;
+
+public record FindLabelListResponse(
+        Long labelId,
+        String labelName,
+        LabelColor labelColor
+) {
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/dto/notification/CountNotificationResponse.java b/src/main/java/clap/server/adapter/inbound/web/dto/notification/CountNotificationResponse.java
new file mode 100644
index 00000000..0c9eba0b
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/dto/notification/CountNotificationResponse.java
@@ -0,0 +1,7 @@
+package clap.server.adapter.inbound.web.dto.notification;
+
+public record CountNotificationResponse(
+        Long memberId,
+        Integer count
+) {
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskLabelRequest.java b/src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskLabelRequest.java
new file mode 100644
index 00000000..46e6bab5
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskLabelRequest.java
@@ -0,0 +1,6 @@
+package clap.server.adapter.inbound.web.dto.task;
+
+public record UpdateTaskLabelRequest(
+        Long labelId
+) {
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/label/FindLabelController.java b/src/main/java/clap/server/adapter/inbound/web/label/FindLabelController.java
new file mode 100644
index 00000000..809de982
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/label/FindLabelController.java
@@ -0,0 +1,48 @@
+package clap.server.adapter.inbound.web.label;
+
+import clap.server.adapter.inbound.security.SecurityUserDetails;
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
+import clap.server.application.port.inbound.label.FindLabelListUsecase;
+import clap.server.common.annotation.architecture.WebAdapter;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.annotation.Secured;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@Tag(name = "02. Task[검토자]")
+@WebAdapter
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/labels")
+public class FindLabelController {
+
+    private final FindLabelListUsecase findLabelListUsecase;
+
+    @Operation(summary = "구분 목록 조회 API")
+    @Parameters({
+            @Parameter(name = "page", description = "조회할 목록 페이지 번호(0부터 시작)", example = "0", required = false),
+            @Parameter(name = "size", description = "조회할 목록 페이지 당 개수", example = "5", required = false)
+    })
+    @Secured({"ROLE_MANAGER"})
+    @GetMapping
+    public ResponseEntity<SliceResponse<FindLabelListResponse>> findLabelList(
+            @AuthenticationPrincipal SecurityUserDetails userInfo,
+            @RequestParam(defaultValue = "0") int page,
+            @RequestParam(defaultValue = "5") int size) {
+        Pageable pageable = PageRequest.of(page, size);
+        return ResponseEntity.ok(findLabelListUsecase.findLabelList(userInfo.getUserId(), pageable));
+    }
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/notification/FindNotificationController.java b/src/main/java/clap/server/adapter/inbound/web/notification/FindNotificationController.java
index 5dfc9b59..1feb38ed 100644
--- a/src/main/java/clap/server/adapter/inbound/web/notification/FindNotificationController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/notification/FindNotificationController.java
@@ -2,7 +2,9 @@
 
 import clap.server.adapter.inbound.security.SecurityUserDetails;
 import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.notification.CountNotificationResponse;
 import clap.server.adapter.inbound.web.dto.notification.FindNotificationListResponse;
+import clap.server.application.port.inbound.notification.CountNotificationUseCase;
 import clap.server.application.port.inbound.notification.FindNotificationListUsecase;
 import clap.server.common.annotation.architecture.WebAdapter;
 import io.swagger.v3.oas.annotations.Operation;
@@ -27,6 +29,7 @@
 public class FindNotificationController {
 
     private final FindNotificationListUsecase findNotificationListUsecase;
+    private final CountNotificationUseCase countNotificationUseCase;
 
     @Operation(summary = "알림 목록 조회 API")
     @Parameters({
@@ -41,4 +44,11 @@ public ResponseEntity<SliceResponse<FindNotificationListResponse>> findNotificat
         Pageable pageable = PageRequest.of(page, size);
         return ResponseEntity.ok(findNotificationListUsecase.findNotificationList(securityUserDetails.getUserId(), pageable));
     }
+
+    @Operation(summary = "미확인 알림 개수 조회 API")
+    @GetMapping("/count")
+    public ResponseEntity<CountNotificationResponse> countNotification(
+            @AuthenticationPrincipal SecurityUserDetails userInfo) {
+        return ResponseEntity.ok(countNotificationUseCase.countNotification(userInfo.getUserId()));
+    }
 }
diff --git a/src/main/java/clap/server/adapter/inbound/web/task/ChangeTaskController.java b/src/main/java/clap/server/adapter/inbound/web/task/ChangeTaskController.java
new file mode 100644
index 00000000..9ec8bd7a
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/task/ChangeTaskController.java
@@ -0,0 +1,73 @@
+package clap.server.adapter.inbound.web.task;
+
+import clap.server.adapter.inbound.security.SecurityUserDetails;
+import clap.server.adapter.inbound.web.dto.task.*;
+import clap.server.application.port.inbound.task.ApprovalTaskUsecase;
+import clap.server.application.port.inbound.task.UpdateTaskLabelUsecase;
+import clap.server.application.port.inbound.task.UpdateTaskProcessorUsecase;
+import clap.server.application.port.inbound.task.UpdateTaskStatusUsecase;
+import clap.server.common.annotation.architecture.WebAdapter;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotNull;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.annotation.Secured;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.*;
+
+
+@Tag(name = "02. Task[검토자]")
+@WebAdapter
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/tasks")
+public class ChangeTaskController {
+
+    private final UpdateTaskStatusUsecase updateTaskStatusUsecase;
+    private final UpdateTaskProcessorUsecase updateTaskProcessorUsecase;
+    private final UpdateTaskLabelUsecase updateTaskLabelUsecase;
+    private final ApprovalTaskUsecase approvalTaskUsecase;
+
+    @Operation(summary = "작업 상태 변경")
+    @Secured({"ROLE_MANGER"})
+    @PatchMapping("/state/{taskId}")
+    public ResponseEntity<UpdateTaskResponse> updateTaskState(
+            @PathVariable @NotNull Long taskId,
+            @AuthenticationPrincipal SecurityUserDetails userInfo,
+            @RequestBody UpdateTaskStatusRequest updateTaskStatusRequest) {
+
+        return ResponseEntity.ok(updateTaskStatusUsecase.updateTaskState(userInfo.getUserId(), taskId, updateTaskStatusRequest));
+    }
+
+    @Operation(summary = "작업 처리자 변경")
+    @Secured({"ROLE_MANAGER"})
+    @PatchMapping("/processor/{taskId}")
+    public ResponseEntity<UpdateTaskResponse> updateTaskProcessor(
+            @PathVariable Long taskId,
+            @AuthenticationPrincipal SecurityUserDetails userInfo,
+            @RequestBody UpdateTaskProcessorRequest updateTaskProcessorRequest) {
+        return ResponseEntity.ok(updateTaskProcessorUsecase.updateTaskProcessor(taskId, userInfo.getUserId(), updateTaskProcessorRequest));
+    }
+
+    @Operation(summary = "작업 구분 변경")
+    @Secured({"ROLE_MANAGER"})
+    @PatchMapping("/label/{taskId}")
+    public ResponseEntity<UpdateTaskResponse> updateTaskLabel(
+            @PathVariable Long taskId,
+            @AuthenticationPrincipal SecurityUserDetails userInfo,
+            @RequestBody UpdateTaskLabelRequest updateTaskLabelRequest) {
+        return ResponseEntity.ok(updateTaskLabelUsecase.updateTaskLabel(taskId, userInfo.getUserId(), updateTaskLabelRequest));
+    }
+
+    @Operation(summary = "작업 승인")
+    @Secured({"ROLE_MANAGER"})
+    @PostMapping("/approval/{taskId}")
+    public ResponseEntity<ApprovalTaskResponse> approvalTask(
+            @RequestBody @Valid ApprovalTaskRequest approvalTaskRequest,
+            @PathVariable Long taskId,
+            @AuthenticationPrincipal SecurityUserDetails userInfo){
+        return ResponseEntity.ok(approvalTaskUsecase.approvalTaskByReviewer(userInfo.getUserId(), taskId, approvalTaskRequest));
+    }
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java b/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java
index ab045008..b45238b1 100644
--- a/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java
@@ -2,7 +2,6 @@
 
 import clap.server.adapter.inbound.security.SecurityUserDetails;
 import clap.server.adapter.inbound.web.dto.task.*;
-import clap.server.adapter.inbound.web.dto.task.UpdateTaskProcessorRequest;
 import clap.server.application.port.inbound.task.*;
 import clap.server.common.annotation.architecture.WebAdapter;
 import io.swagger.v3.oas.annotations.Operation;
@@ -29,9 +28,6 @@ public class ManagementTaskController {
 
     private final CreateTaskUsecase createTaskUsecase;
     private final UpdateTaskUsecase updateTaskUsecase;
-    private final UpdateTaskStatusUsecase updateTaskStatusUsecase;
-    private final UpdateTaskProcessorUsecase updateTaskProcessorUsecase;
-    private final ApprovalTaskUsecase approvalTaskUsecase;
 
     @Operation(summary = "작업 요청 생성")
     @PostMapping(consumes = {MediaType.MULTIPART_FORM_DATA_VALUE, MediaType.APPLICATION_JSON_VALUE})
@@ -54,35 +50,4 @@ public ResponseEntity<UpdateTaskResponse> updateTask(
             @AuthenticationPrincipal SecurityUserDetails userInfo){
         return ResponseEntity.ok(updateTaskUsecase.updateTask(userInfo.getUserId(), taskId, updateTaskRequest, attachments));
     }
-
-    @Operation(summary = "작업 상태 변경")
-    @Secured({"ROLE_MANGER"})
-    @PatchMapping("/state/{taskId}")
-    public ResponseEntity<UpdateTaskResponse> updateTaskState(
-            @PathVariable @NotNull Long taskId,
-            @AuthenticationPrincipal SecurityUserDetails userInfo,
-            @RequestBody UpdateTaskStatusRequest updateTaskStatusRequest) {
-
-        return ResponseEntity.ok(updateTaskStatusUsecase.updateTaskState(userInfo.getUserId(), taskId, updateTaskStatusRequest));
-    }
-
-    @Operation(summary = "작업 처리자 변경")
-    @Secured({"ROLE_MANAGER"})
-    @PatchMapping("/processor/{taskId}")
-    public ResponseEntity<UpdateTaskResponse> updateTaskProcessor(
-            @PathVariable Long taskId,
-            @AuthenticationPrincipal SecurityUserDetails userInfo,
-            @RequestBody UpdateTaskProcessorRequest updateTaskProcessorRequest) {
-        return ResponseEntity.ok(updateTaskProcessorUsecase.updateTaskProcessor(taskId, userInfo.getUserId(), updateTaskProcessorRequest));
-    }
-
-    @Operation(summary = "작업 승인")
-    @Secured({"ROLE_MANAGER"})
-    @PostMapping("/approval/{taskId}")
-    public ResponseEntity<ApprovalTaskResponse> approvalTask(
-            @RequestBody @Valid ApprovalTaskRequest approvalTaskRequest,
-            @PathVariable Long taskId,
-            @AuthenticationPrincipal SecurityUserDetails userInfo){
-        return ResponseEntity.ok(approvalTaskUsecase.approvalTaskByReviewer(userInfo.getUserId(), taskId, approvalTaskRequest));
-    }
 }
diff --git a/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java b/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java
index dd09e12a..5a26a3d7 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/LabelPersistenceAdapter.java
@@ -1,14 +1,24 @@
 package clap.server.adapter.outbound.persistense;
 
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
+import clap.server.adapter.inbound.web.dto.notification.FindNotificationListResponse;
 import clap.server.adapter.outbound.persistense.entity.task.LabelEntity;
 import clap.server.adapter.outbound.persistense.mapper.LabelPersistenceMapper;
 import clap.server.adapter.outbound.persistense.repository.task.LabelRepository;
+import clap.server.application.mapper.LabelMapper;
+import clap.server.application.mapper.NotificationMapper;
 import clap.server.application.port.outbound.task.LoadLabelPort;
 import clap.server.common.annotation.architecture.PersistenceAdapter;
+import clap.server.domain.model.notification.Notification;
 import clap.server.domain.model.task.Label;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
 
+import java.util.List;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 @PersistenceAdapter
 @RequiredArgsConstructor
@@ -18,8 +28,27 @@ public class LabelPersistenceAdapter implements LoadLabelPort {
     private final LabelPersistenceMapper labelPersistenceMapper;
 
     @Override
-    public Optional<Label> findById(Long id) {
-        Optional<LabelEntity> labelEntity = labelRepository.findById(id);
+    public Optional<Label> findById(Long labelId) {
+        Optional<LabelEntity> labelEntity = labelRepository.findById(labelId);
         return labelEntity.map(labelPersistenceMapper::toDomain);
     }
+
+    @Override
+    public List<Label> findLabelList() {
+        List<LabelEntity> labelEntities = labelRepository.findByIsDeletedFalse();
+
+        return labelEntities.stream()
+                .map(labelPersistenceMapper::toDomain)
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public SliceResponse<FindLabelListResponse> findLabelListBySlice(Pageable pageable) {
+        Slice<Label> labelList = labelRepository.findByIsDeletedFalse(pageable)
+                .map(labelPersistenceMapper::toDomain);
+
+        return LabelMapper.toSliceOfFindNoticeListResponse(
+                labelList.map(LabelMapper::toFindLabelListResponse)
+        );
+    }
 }
diff --git a/src/main/java/clap/server/adapter/outbound/persistense/NotificationPersistenceAdapter.java b/src/main/java/clap/server/adapter/outbound/persistense/NotificationPersistenceAdapter.java
index b7330bd0..6df83e81 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/NotificationPersistenceAdapter.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/NotificationPersistenceAdapter.java
@@ -49,6 +49,11 @@ public List<Notification> findNotificationsByMemberId(Long memberId) {
                 .collect(Collectors.toList());
     }
 
+    @Override
+    public Integer countNotification(Long memberId) {
+        return notificationRepository.countByIsReadFalseAndReceiver_MemberId(memberId);
+    }
+
     @Override
     public void save(Notification notification) {
         notificationRepository.save(notificationPersistenceMapper.toEntity(notification));
diff --git a/src/main/java/clap/server/adapter/outbound/persistense/repository/notification/NotificationRepository.java b/src/main/java/clap/server/adapter/outbound/persistense/repository/notification/NotificationRepository.java
index 0239cd44..e4462dd5 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/repository/notification/NotificationRepository.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/repository/notification/NotificationRepository.java
@@ -1,5 +1,6 @@
 package clap.server.adapter.outbound.persistense.repository.notification;
 
+import clap.server.adapter.outbound.persistense.entity.member.MemberEntity;
 import clap.server.adapter.outbound.persistense.entity.notification.NotificationEntity;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
@@ -15,4 +16,6 @@ public interface NotificationRepository extends JpaRepository<NotificationEntity
     Slice<NotificationEntity> findAllByReceiver_MemberIdOrderByCreatedAtDesc(Long receiverId, Pageable pageable);
 
     List<NotificationEntity> findAllByReceiver_MemberId(Long memberId);
+
+    Integer countByIsReadFalseAndReceiver_MemberId(Long memberId);
 }
\ No newline at end of file
diff --git a/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java b/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java
index 9aca0e09..3483aa2e 100644
--- a/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java
+++ b/src/main/java/clap/server/adapter/outbound/persistense/repository/task/LabelRepository.java
@@ -1,9 +1,17 @@
 package clap.server.adapter.outbound.persistense.repository.task;
 
 import clap.server.adapter.outbound.persistense.entity.task.LabelEntity;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
+
 @Repository
 public interface LabelRepository extends JpaRepository<LabelEntity, Long> {
+
+    List<LabelEntity> findByIsDeletedFalse();
+
+    Slice<LabelEntity> findByIsDeletedFalse(Pageable pageable);
 }
diff --git a/src/main/java/clap/server/application/Task/UpdateTaskService.java b/src/main/java/clap/server/application/Task/UpdateTaskService.java
index 372f2cba..d8163b6c 100644
--- a/src/main/java/clap/server/application/Task/UpdateTaskService.java
+++ b/src/main/java/clap/server/application/Task/UpdateTaskService.java
@@ -1,29 +1,26 @@
 package clap.server.application.Task;
 
-import clap.server.adapter.inbound.web.dto.task.UpdateTaskRequest;
-import clap.server.adapter.inbound.web.dto.task.UpdateTaskResponse;
-import clap.server.adapter.inbound.web.dto.task.UpdateTaskStatusRequest;
-import clap.server.adapter.inbound.web.dto.task.UpdateTaskProcessorRequest;
+import clap.server.adapter.inbound.web.dto.task.*;
 import clap.server.adapter.outbound.infrastructure.s3.S3UploadAdapter;
 import clap.server.application.mapper.AttachmentMapper;
 import clap.server.application.mapper.TaskMapper;
 import clap.server.application.port.inbound.domain.CategoryService;
 import clap.server.application.port.inbound.domain.MemberService;
 import clap.server.application.port.inbound.domain.TaskService;
+import clap.server.application.port.inbound.task.UpdateTaskLabelUsecase;
 import clap.server.application.port.inbound.task.UpdateTaskProcessorUsecase;
 import clap.server.application.port.inbound.task.UpdateTaskStatusUsecase;
 import clap.server.application.port.inbound.task.UpdateTaskUsecase;
 import clap.server.application.port.outbound.task.CommandAttachmentPort;
 import clap.server.application.port.outbound.task.CommandTaskPort;
 import clap.server.application.port.outbound.task.LoadAttachmentPort;
+import clap.server.application.port.outbound.task.LoadLabelPort;
 import clap.server.common.annotation.architecture.ApplicationService;
 import clap.server.domain.model.member.Member;
-import clap.server.domain.model.task.Attachment;
-import clap.server.domain.model.task.Category;
-import clap.server.domain.model.task.FilePath;
-import clap.server.domain.model.task.Task;
+import clap.server.domain.model.task.*;
 
 import clap.server.exception.ApplicationException;
+import clap.server.exception.code.LabelErrorCode;
 import clap.server.exception.code.MemberErrorCode;
 import clap.server.exception.code.TaskErrorCode;
 import lombok.RequiredArgsConstructor;
@@ -34,17 +31,20 @@
 import java.util.List;
 import java.util.Objects;
 
+import static clap.server.exception.code.MemberErrorCode.ACTIVE_MEMBER_NOT_FOUND;
+
 
 @ApplicationService
 @RequiredArgsConstructor
 @Slf4j
-public class UpdateTaskService implements UpdateTaskUsecase, UpdateTaskStatusUsecase, UpdateTaskProcessorUsecase {
+public class UpdateTaskService implements UpdateTaskUsecase, UpdateTaskStatusUsecase, UpdateTaskProcessorUsecase, UpdateTaskLabelUsecase {
 
     private final MemberService memberService;
     private final CategoryService categoryService;
     private final TaskService taskService;
     private final CommandTaskPort commandTaskPort;
     private final LoadAttachmentPort loadAttachmentPort;
+    private final LoadLabelPort loadLabelPort;
     private final CommandAttachmentPort commandAttachmentPort;
     private final S3UploadAdapter s3UploadAdapter;
 
@@ -96,6 +96,21 @@ public UpdateTaskResponse updateTaskProcessor(Long taskId, Long userId, UpdateTa
         // TODO : 알림 생성 로직 및 푸시 알림 로직 추가
     }
 
+    @Transactional
+    @Override
+    public UpdateTaskResponse updateTaskLabel(Long taskId, Long userId, UpdateTaskLabelRequest request) {
+        Member reviewer = memberService.findActiveMember(userId);
+        if (!reviewer.isReviewer()) {
+            throw new ApplicationException(MemberErrorCode.NOT_A_REVIEWER);
+        }
+        Task task = taskService.findById(taskId);
+        Label label = loadLabelPort.findById(request.labelId()).orElseThrow(() -> new ApplicationException(LabelErrorCode.LABEL_NOT_FOUND));
+
+        task.updateLabel(label);
+        Task updatetask = commandTaskPort.save(task);
+        return TaskMapper.toUpdateTaskResponse(updatetask);
+    }
+
     private void updateAttachments(List<Long> attachmentIdsToDelete, List<MultipartFile> files, Task task) {
         List<Attachment> attachmentsToDelete = validateAndGetAttachments(attachmentIdsToDelete, task);
         attachmentsToDelete.forEach(Attachment::softDelete);
diff --git a/src/main/java/clap/server/application/mapper/LabelMapper.java b/src/main/java/clap/server/application/mapper/LabelMapper.java
new file mode 100644
index 00000000..894305f2
--- /dev/null
+++ b/src/main/java/clap/server/application/mapper/LabelMapper.java
@@ -0,0 +1,31 @@
+package clap.server.application.mapper;
+
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
+import clap.server.adapter.inbound.web.dto.notification.FindNotificationListResponse;
+import clap.server.domain.model.task.Label;
+import org.springframework.data.domain.Slice;
+
+public class LabelMapper {
+
+    private LabelMapper() {
+        throw new IllegalArgumentException();
+    }
+
+    public static FindLabelListResponse toFindLabelListResponse(Label label) {
+        return new FindLabelListResponse(
+                label.getLabelId(),
+                label.getLabelName(),
+                label.getLabelColor()
+        );
+    }
+
+    public static SliceResponse<FindLabelListResponse> toSliceOfFindNoticeListResponse(Slice<FindLabelListResponse> slice) {
+        return new SliceResponse<>(
+                slice.getContent(),
+                slice.hasNext(),
+                slice.isFirst(),
+                slice.isLast()
+        );
+    }
+}
diff --git a/src/main/java/clap/server/application/mapper/NotificationMapper.java b/src/main/java/clap/server/application/mapper/NotificationMapper.java
index e2c83e52..4098dd39 100644
--- a/src/main/java/clap/server/application/mapper/NotificationMapper.java
+++ b/src/main/java/clap/server/application/mapper/NotificationMapper.java
@@ -1,6 +1,7 @@
 package clap.server.application.mapper;
 
 import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.notification.CountNotificationResponse;
 import clap.server.adapter.inbound.web.dto.notification.FindNotificationListResponse;
 import clap.server.domain.model.notification.Notification;
 import org.springframework.data.domain.Slice;
@@ -28,4 +29,11 @@ public static SliceResponse<FindNotificationListResponse> toSliceOfFindNoticeLis
                 slice.isLast()
         );
     }
+
+    public static CountNotificationResponse toCountNotificationResponse(Long userId, Integer count) {
+        return new CountNotificationResponse(
+                userId,
+                count
+        );
+    }
 }
diff --git a/src/main/java/clap/server/application/port/inbound/label/FindLabelListUsecase.java b/src/main/java/clap/server/application/port/inbound/label/FindLabelListUsecase.java
new file mode 100644
index 00000000..fbfe94cb
--- /dev/null
+++ b/src/main/java/clap/server/application/port/inbound/label/FindLabelListUsecase.java
@@ -0,0 +1,13 @@
+package clap.server.application.port.inbound.label;
+
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
+import org.springframework.data.domain.Pageable;
+
+import java.util.List;
+
+public interface FindLabelListUsecase {
+
+    SliceResponse<FindLabelListResponse> findLabelList(Long userId, Pageable pageable);
+    List<FindLabelListResponse> findLabelListAdmin(Long userId);
+}
diff --git a/src/main/java/clap/server/application/port/inbound/notification/CountNotificationUseCase.java b/src/main/java/clap/server/application/port/inbound/notification/CountNotificationUseCase.java
new file mode 100644
index 00000000..f69158a6
--- /dev/null
+++ b/src/main/java/clap/server/application/port/inbound/notification/CountNotificationUseCase.java
@@ -0,0 +1,8 @@
+package clap.server.application.port.inbound.notification;
+
+import clap.server.adapter.inbound.web.dto.notification.CountNotificationResponse;
+
+public interface CountNotificationUseCase {
+
+    CountNotificationResponse countNotification(Long userId);
+}
diff --git a/src/main/java/clap/server/application/port/inbound/task/UpdateTaskLabelUsecase.java b/src/main/java/clap/server/application/port/inbound/task/UpdateTaskLabelUsecase.java
new file mode 100644
index 00000000..be5c66dc
--- /dev/null
+++ b/src/main/java/clap/server/application/port/inbound/task/UpdateTaskLabelUsecase.java
@@ -0,0 +1,8 @@
+package clap.server.application.port.inbound.task;
+
+import clap.server.adapter.inbound.web.dto.task.UpdateTaskLabelRequest;
+import clap.server.adapter.inbound.web.dto.task.UpdateTaskResponse;
+
+public interface UpdateTaskLabelUsecase {
+    UpdateTaskResponse updateTaskLabel(Long taskId, Long userId, UpdateTaskLabelRequest request);
+}
diff --git a/src/main/java/clap/server/application/port/outbound/notification/LoadNotificationPort.java b/src/main/java/clap/server/application/port/outbound/notification/LoadNotificationPort.java
index 8954c40d..4e4a8731 100644
--- a/src/main/java/clap/server/application/port/outbound/notification/LoadNotificationPort.java
+++ b/src/main/java/clap/server/application/port/outbound/notification/LoadNotificationPort.java
@@ -15,4 +15,6 @@ public interface LoadNotificationPort {
     SliceResponse<FindNotificationListResponse> findAllByReceiverId(Long receiverId, Pageable pageable);
 
     List<Notification> findNotificationsByMemberId(Long memberId);
+
+    Integer countNotification(Long memberId);
 }
\ No newline at end of file
diff --git a/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java b/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java
index 7edea35b..e7f51bb9 100644
--- a/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java
+++ b/src/main/java/clap/server/application/port/outbound/task/LoadLabelPort.java
@@ -1,10 +1,22 @@
 package clap.server.application.port.outbound.task;
 
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
 import clap.server.domain.model.task.Label;
+import org.springframework.data.domain.Pageable;
 
+import java.util.List;
 import java.util.Optional;
 
 public interface LoadLabelPort {
 
-    Optional<Label> findById(Long id);
+    Optional<Label> findById(Long labelId);
+
+    List<Label> findLabelList();
+
+    SliceResponse<FindLabelListResponse> findLabelListBySlice(Pageable pageable);
+
+
+
+
 }
diff --git a/src/main/java/clap/server/application/service/label/FindLabelListService.java b/src/main/java/clap/server/application/service/label/FindLabelListService.java
new file mode 100644
index 00000000..77f3bd26
--- /dev/null
+++ b/src/main/java/clap/server/application/service/label/FindLabelListService.java
@@ -0,0 +1,46 @@
+package clap.server.application.service.label;
+
+import clap.server.adapter.inbound.web.dto.common.SliceResponse;
+import clap.server.adapter.inbound.web.dto.label.FindLabelListResponse;
+import clap.server.application.mapper.LabelMapper;
+import clap.server.application.port.inbound.domain.MemberService;
+import clap.server.application.port.inbound.label.FindLabelListUsecase;
+import clap.server.application.port.outbound.task.LoadLabelPort;
+import clap.server.common.annotation.architecture.ApplicationService;
+import clap.server.domain.model.member.Member;
+import clap.server.exception.ApplicationException;
+import clap.server.exception.code.MemberErrorCode;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Pageable;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@ApplicationService
+@RequiredArgsConstructor
+@Transactional(readOnly = true)
+public class FindLabelListService implements FindLabelListUsecase {
+
+    private final LoadLabelPort loadLabelPort;
+    private final MemberService memberService;
+
+    @Override
+    public SliceResponse<FindLabelListResponse> findLabelList(Long userId, Pageable pageable) {
+        Member member = memberService.findActiveMember(userId);
+
+        // 담당자인데 검토자가 아닌 경우 Error 처리
+        if (!member.getMemberInfo().isReviewer()) {
+            throw new ApplicationException(MemberErrorCode.NOT_A_REVIEWER);
+        }
+        return loadLabelPort.findLabelListBySlice(pageable);
+    }
+
+    @Override
+    public List<FindLabelListResponse> findLabelListAdmin(Long userId) {
+        memberService.findActiveMember(userId);
+        return loadLabelPort.findLabelList()
+                .stream()
+                .map(LabelMapper::toFindLabelListResponse)
+                .toList();
+    }
+}
diff --git a/src/main/java/clap/server/application/service/notification/CountNotificationService.java b/src/main/java/clap/server/application/service/notification/CountNotificationService.java
new file mode 100644
index 00000000..325688bc
--- /dev/null
+++ b/src/main/java/clap/server/application/service/notification/CountNotificationService.java
@@ -0,0 +1,25 @@
+package clap.server.application.service.notification;
+
+import clap.server.adapter.inbound.web.dto.notification.CountNotificationResponse;
+import clap.server.application.mapper.NotificationMapper;
+import clap.server.application.port.inbound.notification.CountNotificationUseCase;
+import clap.server.application.port.outbound.notification.LoadNotificationPort;
+import clap.server.common.annotation.architecture.ApplicationService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.transaction.annotation.Transactional;
+
+@ApplicationService
+@Transactional(readOnly = true)
+@RequiredArgsConstructor
+public class CountNotificationService implements CountNotificationUseCase {
+
+    private final LoadNotificationPort loadNotificationPort;
+
+    @Transactional
+    @Override
+    public CountNotificationResponse countNotification(Long userId) {
+        Integer count = loadNotificationPort.countNotification(userId);
+
+        return NotificationMapper.toCountNotificationResponse(userId, count);
+    }
+}
diff --git a/src/main/java/clap/server/application/service/notification/CreateNotificationService.java b/src/main/java/clap/server/application/service/notification/CreateNotificationService.java
index 8071eba1..a99af8bc 100644
--- a/src/main/java/clap/server/application/service/notification/CreateNotificationService.java
+++ b/src/main/java/clap/server/application/service/notification/CreateNotificationService.java
@@ -4,6 +4,7 @@
 import clap.server.common.annotation.architecture.ApplicationService;
 import clap.server.domain.model.notification.Notification;
 import lombok.RequiredArgsConstructor;
+import org.springframework.transaction.annotation.Transactional;
 
 @ApplicationService
 @RequiredArgsConstructor
@@ -11,6 +12,7 @@ public class CreateNotificationService{
 
     private final CommandNotificationPort commandNotificationPort;
 
+    @Transactional
     public void createNotification(Notification request) {
 
         commandNotificationPort.save(request);
diff --git a/src/main/java/clap/server/domain/model/task/Task.java b/src/main/java/clap/server/domain/model/task/Task.java
index fb17bcd0..3b0b2814 100644
--- a/src/main/java/clap/server/domain/model/task/Task.java
+++ b/src/main/java/clap/server/domain/model/task/Task.java
@@ -67,6 +67,10 @@ public void updateProcessor(Member processor) {
         this.processor = processor;
     }
 
+    public void updateLabel(Label label) {
+        this.label = label;
+    }
+
     public void approveTask(Member reviewer, Member processor, LocalDateTime dueDate, Category category, Label label) {
         this.reviewer = reviewer;
         this.processor = processor;
diff --git a/src/main/java/clap/server/exception/code/LabelErrorCode.java b/src/main/java/clap/server/exception/code/LabelErrorCode.java
new file mode 100644
index 00000000..1ba89e99
--- /dev/null
+++ b/src/main/java/clap/server/exception/code/LabelErrorCode.java
@@ -0,0 +1,16 @@
+package clap.server.exception.code;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+
+@Getter
+@RequiredArgsConstructor
+public enum LabelErrorCode implements BaseErrorCode{
+    LABEL_NOT_FOUND(HttpStatus.NOT_FOUND, "LABEL_001", "작업 구분을 찾을 수 없습니다.");
+
+
+    private final HttpStatus httpStatus;
+    private final String customCode;
+    private final String message;
+}