diff --git a/src/main/java/clap/server/adapter/inbound/web/admin/AddCategoryController.java b/src/main/java/clap/server/adapter/inbound/web/admin/AddCategoryController.java
index 584726c4..d1ad5fd5 100644
--- a/src/main/java/clap/server/adapter/inbound/web/admin/AddCategoryController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/admin/AddCategoryController.java
@@ -3,7 +3,8 @@
 import clap.server.adapter.inbound.security.SecurityUserDetails;
 import clap.server.adapter.inbound.web.dto.admin.AddMainCategoryRequest;
 import clap.server.adapter.inbound.web.dto.admin.AddSubCategoryRequest;
-import clap.server.application.port.inbound.admin.AddCategoryUsecase;
+import clap.server.application.port.inbound.admin.AddMainCategoryUsecase;
+import clap.server.application.port.inbound.admin.AddSubCategoryUsecase;
 import clap.server.common.annotation.architecture.WebAdapter;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
@@ -20,20 +21,21 @@
 @RequiredArgsConstructor
 @RequestMapping("/api/managements")
 public class AddCategoryController {
-    private final AddCategoryUsecase addCategoryUsecase;
+    private final AddMainCategoryUsecase addMainCategoryUsecase;
+    private final AddSubCategoryUsecase addSubCategoryUsecase;
 
     @Operation(summary = "1차 카테고리 추가")
     @PostMapping("/main-category")
     @Secured("ROLE_ADMIN")
     public void addMainCategory(@AuthenticationPrincipal SecurityUserDetails userInfo, @Valid @RequestBody AddMainCategoryRequest addMainCategoryRequest) {
-        addCategoryUsecase.addMainCategory(userInfo.getUserId(), addMainCategoryRequest.code(), addMainCategoryRequest.name());
+        addMainCategoryUsecase.addMainCategory(userInfo.getUserId(), addMainCategoryRequest.code(), addMainCategoryRequest.name());
     }
 
     @Operation(summary = "2차 카테고리 추가")
     @PostMapping("/sub-category")
     @Secured("ROLE_ADMIN")
     public void addSubCategory(@AuthenticationPrincipal SecurityUserDetails userInfo, @Valid @RequestBody AddSubCategoryRequest addCategoryRequest) {
-        addCategoryUsecase.addSubCategory(userInfo.getUserId(), addCategoryRequest.mainCategoryId(), addCategoryRequest.code(), addCategoryRequest.name());
+        addSubCategoryUsecase.addSubCategory(userInfo.getUserId(), addCategoryRequest.mainCategoryId(), addCategoryRequest.code(), addCategoryRequest.name());
     }
 
 }
\ No newline at end of file
diff --git a/src/main/java/clap/server/adapter/inbound/web/admin/FindCategoryController.java b/src/main/java/clap/server/adapter/inbound/web/admin/FindCategoryController.java
index bc2ed571..16b74c08 100644
--- a/src/main/java/clap/server/adapter/inbound/web/admin/FindCategoryController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/admin/FindCategoryController.java
@@ -16,7 +16,7 @@
 
 import java.util.List;
 
-@Tag(name = "카테고리 조회")
+@Tag(name = "02. Task [카테고리]", description = "카테고리 조회 API")
 @WebAdapter
 @RequiredArgsConstructor
 @RequestMapping("/api")
diff --git a/src/main/java/clap/server/adapter/inbound/web/admin/UpdateCategoryController.java b/src/main/java/clap/server/adapter/inbound/web/admin/UpdateCategoryController.java
index 9ec32397..0f3d877a 100644
--- a/src/main/java/clap/server/adapter/inbound/web/admin/UpdateCategoryController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/admin/UpdateCategoryController.java
@@ -6,6 +6,7 @@
 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 lombok.RequiredArgsConstructor;
 import org.springframework.security.access.annotation.Secured;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
@@ -25,7 +26,7 @@ public class UpdateCategoryController {
     @PatchMapping("/categories/{categoryId}")
     @Secured("ROLE_ADMIN")
     public void updateCategory(@AuthenticationPrincipal SecurityUserDetails userInfo, @PathVariable Long categoryId,
-                               @RequestBody UpdateCategoryRequest updateCategoryRequest) {
+                               @Valid @RequestBody UpdateCategoryRequest updateCategoryRequest) {
         updateCategoryUsecase.updateCategory(userInfo.getUserId(), categoryId, updateCategoryRequest.name(), updateCategoryRequest.code());
     }
 }
\ No newline at end of file
diff --git a/src/main/java/clap/server/adapter/inbound/web/statistics/FindStatisticsController.java b/src/main/java/clap/server/adapter/inbound/web/statistics/FindStatisticsController.java
index e84c0c75..dfa2b023 100644
--- a/src/main/java/clap/server/adapter/inbound/web/statistics/FindStatisticsController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/statistics/FindStatisticsController.java
@@ -3,7 +3,8 @@
 import clap.server.adapter.inbound.web.dto.statistics.PeriodType;
 import clap.server.adapter.inbound.web.dto.statistics.StatisticsResponse;
 import clap.server.adapter.inbound.web.dto.statistics.StatisticsType;
-import clap.server.application.port.inbound.statistics.*;
+import clap.server.application.port.inbound.statistics.FindSubCategoryTaskRequestUsecase;
+import clap.server.application.port.inbound.statistics.FindTaskProcessUsecase;
 import clap.server.common.annotation.architecture.WebAdapter;
 import clap.server.exception.StatisticsException;
 import io.swagger.v3.oas.annotations.Operation;
@@ -11,6 +12,7 @@
 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.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -20,7 +22,7 @@
 import static clap.server.exception.code.StatisticsErrorCode.STATISTICS_BAD_REQUEST;
 import static io.swagger.v3.oas.annotations.enums.ParameterIn.QUERY;
 
-@Tag(name = "02. Task [담당자]", description = "작업 통계 API")
+@Tag(name = "02. Task [통계]", description = "작업 통계 API")
 @WebAdapter
 @RequiredArgsConstructor
 @RequestMapping("/api/tasks/statistics")
@@ -33,6 +35,7 @@ public class FindStatisticsController {
     @Parameter(name = "periodType", description = "day, week, month", required = true, in = QUERY)
     @Parameter(name = "statisticsType", description = "request-by-period, process-by-period, request-by-category, process-by-manager", required = true, in = QUERY)
     @GetMapping
+    @Secured("ROLE_MANAGER")
     public ResponseEntity<List<StatisticsResponse>> aggregateTaskStatistics(@RequestParam PeriodType periodType, @RequestParam StatisticsType statisticsType) {
         switch (statisticsType) {
             case REQUEST_BY_PERIOD ->
@@ -51,6 +54,7 @@ public ResponseEntity<List<StatisticsResponse>> aggregateTaskStatistics(@Request
     @Parameter(name = "periodType", description = "day, week, month", required = true, in = QUERY)
     @Parameter(name = "mainCategory", description = "1차 카테고리 이름", required = true, in = QUERY)
     @GetMapping("/subcategory")
+    @Secured("ROLE_MANAGER")
     public ResponseEntity<List<StatisticsResponse>> aggregateSubCategoryTaskRequest(@RequestParam PeriodType periodType, @RequestParam String mainCategory) {
         return ResponseEntity.ok(findSubCategoryTaskRequestUsecase
                 .aggregateSubCategoryTaskRequest(periodType.getType(), mainCategory));
diff --git a/src/main/java/clap/server/application/port/inbound/admin/AddMainCategoryUsecase.java b/src/main/java/clap/server/application/port/inbound/admin/AddMainCategoryUsecase.java
new file mode 100644
index 00000000..382c7f57
--- /dev/null
+++ b/src/main/java/clap/server/application/port/inbound/admin/AddMainCategoryUsecase.java
@@ -0,0 +1,5 @@
+package clap.server.application.port.inbound.admin;
+
+public interface AddMainCategoryUsecase {
+    void addMainCategory(Long adminId, String code, String name);
+}
\ No newline at end of file
diff --git a/src/main/java/clap/server/application/port/inbound/admin/AddCategoryUsecase.java b/src/main/java/clap/server/application/port/inbound/admin/AddSubCategoryUsecase.java
similarity index 56%
rename from src/main/java/clap/server/application/port/inbound/admin/AddCategoryUsecase.java
rename to src/main/java/clap/server/application/port/inbound/admin/AddSubCategoryUsecase.java
index b49bc41b..26df3d7b 100644
--- a/src/main/java/clap/server/application/port/inbound/admin/AddCategoryUsecase.java
+++ b/src/main/java/clap/server/application/port/inbound/admin/AddSubCategoryUsecase.java
@@ -1,6 +1,5 @@
 package clap.server.application.port.inbound.admin;
 
-public interface AddCategoryUsecase {
-    void addMainCategory(Long adminId, String code, String name);
+public interface AddSubCategoryUsecase {
     void addSubCategory(Long adminId, Long mainCategoryId, String code, String name);
-}
\ No newline at end of file
+}
diff --git a/src/main/java/clap/server/application/service/admin/AddCategoryService.java b/src/main/java/clap/server/application/service/admin/AddCategoryService.java
index e759577e..cd401450 100644
--- a/src/main/java/clap/server/application/service/admin/AddCategoryService.java
+++ b/src/main/java/clap/server/application/service/admin/AddCategoryService.java
@@ -1,6 +1,7 @@
 package clap.server.application.service.admin;
 
-import clap.server.application.port.inbound.admin.AddCategoryUsecase;
+import clap.server.application.port.inbound.admin.AddMainCategoryUsecase;
+import clap.server.application.port.inbound.admin.AddSubCategoryUsecase;
 import clap.server.application.port.outbound.member.LoadMemberPort;
 import clap.server.application.port.outbound.task.CommandCategoryPort;
 import clap.server.application.port.outbound.task.LoadCategoryPort;
@@ -17,7 +18,7 @@
 
 @ApplicationService
 @RequiredArgsConstructor
-public class AddCategoryService implements AddCategoryUsecase {
+public class AddCategoryService implements AddMainCategoryUsecase, AddSubCategoryUsecase {
     private final CommandCategoryPort commandCategoryPort;
     private final LoadCategoryPort loadCategoryPort;
     private final LoadMemberPort loadMemberPort;
diff --git a/src/main/java/clap/server/common/utils/StringToPeriodTypeConverter.java b/src/main/java/clap/server/common/utils/StringToPeriodTypeConverter.java
new file mode 100644
index 00000000..ae462adf
--- /dev/null
+++ b/src/main/java/clap/server/common/utils/StringToPeriodTypeConverter.java
@@ -0,0 +1,13 @@
+package clap.server.common.utils;
+
+import clap.server.adapter.inbound.web.dto.statistics.PeriodType;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.stereotype.Component;
+
+@Component
+public class StringToPeriodTypeConverter implements Converter<String, PeriodType> {
+    @Override
+    public PeriodType convert(String source) {
+        return PeriodType.from(source);
+    }
+}
diff --git a/src/main/java/clap/server/common/utils/StringToStatisticsTypeConverter.java b/src/main/java/clap/server/common/utils/StringToStatisticsTypeConverter.java
new file mode 100644
index 00000000..6828d711
--- /dev/null
+++ b/src/main/java/clap/server/common/utils/StringToStatisticsTypeConverter.java
@@ -0,0 +1,13 @@
+package clap.server.common.utils;
+
+import clap.server.adapter.inbound.web.dto.statistics.StatisticsType;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.stereotype.Component;
+
+@Component
+public class StringToStatisticsTypeConverter implements Converter<String, StatisticsType> {
+    @Override
+    public StatisticsType convert(String source) {
+        return StatisticsType.from(source);
+    }
+}
diff --git a/src/main/java/clap/server/config/web/WebConfig.java b/src/main/java/clap/server/config/web/WebConfig.java
new file mode 100644
index 00000000..ac2294c6
--- /dev/null
+++ b/src/main/java/clap/server/config/web/WebConfig.java
@@ -0,0 +1,23 @@
+package clap.server.config.web;
+
+import clap.server.common.utils.StringToPeriodTypeConverter;
+import clap.server.common.utils.StringToStatisticsTypeConverter;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.ConversionServiceFactoryBean;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.util.Set;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+    @Bean
+    public ConversionServiceFactoryBean conversionService() {
+        ConversionServiceFactoryBean conversionService = new ConversionServiceFactoryBean();
+        conversionService.setConverters(Set.of(
+                new StringToStatisticsTypeConverter(),
+                new StringToPeriodTypeConverter()
+        ));
+        return conversionService;
+    }
+}