diff --git a/apps/as/src/entities/fnrs-cnsltn/api/fnrs-cnsltn-service.ts b/apps/as/src/entities/fnrs-cnsltn/api/fnrs-cnsltn-service.ts
index ffac5eb4a..a74838d49 100644
--- a/apps/as/src/entities/fnrs-cnsltn/api/fnrs-cnsltn-service.ts
+++ b/apps/as/src/entities/fnrs-cnsltn/api/fnrs-cnsltn-service.ts
@@ -98,6 +98,10 @@ async function changePrgrsSttsComCd(body: DocPrgrsUpdateRequestDto): Promise<voi
   await client.post<void>(`${BASE}/doc/updatePrgrsStts`, body);
 }
 
+async function rejectPrgrsStts(body: DocPrgrsUpdateRequestDto): Promise<void> {
+  await client.post<void>(`${BASE}/doc/rejectPrgrsStts`, body);
+}
+
 export const fnrsCnsltnMngService = {
   findPage,
   findById,
@@ -112,4 +116,5 @@ export const fnrsCnsltnMngService = {
   remove,
   findFileVrfcResults,
   changePrgrsSttsComCd,
+  rejectPrgrsStts,
 } satisfies FnrsCnsltnMngService;
diff --git a/apps/as/src/entities/fnrs-cnsltn/model/fnrs-cnsltn-interface.ts b/apps/as/src/entities/fnrs-cnsltn/model/fnrs-cnsltn-interface.ts
index 07d3983e9..adfd40338 100644
--- a/apps/as/src/entities/fnrs-cnsltn/model/fnrs-cnsltn-interface.ts
+++ b/apps/as/src/entities/fnrs-cnsltn/model/fnrs-cnsltn-interface.ts
@@ -145,4 +145,5 @@ export interface FnrsCnsltnMngService {
   remove(fnrsCnsltnDocNo: string): Promise<void>;
   findFileVrfcResults(fnrsCnsltnDocNo: string): Promise<FnrsCnsltnFileVrfcRsltResponseDto[]>;
   changePrgrsSttsComCd(body: DocPrgrsUpdateRequestDto): Promise<void>;
+  rejectPrgrsStts(body: DocPrgrsUpdateRequestDto): Promise<void>;
 }
diff --git a/apps/as/src/entities/instl-sncn/api/instl-sncn-service.ts b/apps/as/src/entities/instl-sncn/api/instl-sncn-service.ts
index 4c442a3da..4804f22fb 100644
--- a/apps/as/src/entities/instl-sncn/api/instl-sncn-service.ts
+++ b/apps/as/src/entities/instl-sncn/api/instl-sncn-service.ts
@@ -91,6 +91,10 @@ async function changePrgrsSttsComCd(payload: DocPrgrsUpdateRequestDto): Promise<
   await client.post(`${BASE}/doc/updatePrgrsStts`, payload);
 }
 
+async function rejectPrgrsStts(payload: DocPrgrsUpdateRequestDto): Promise<void> {
+  await client.post(`${BASE}/doc/rejectPrgrsStts`, payload);
+}
+
 export const instlSncnService = {
   getPage,
   getById,
@@ -102,6 +106,7 @@ export const instlSncnService = {
   submitReqSupplement,
   remove,
   changePrgrsSttsComCd,
+  rejectPrgrsStts,
 } satisfies InstlSncnMngService;
 
 // TODO: st-anls-mst service 로 분리
diff --git a/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts b/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts
index 1eea8c4c9..aebbc5c6f 100644
--- a/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts
+++ b/apps/as/src/entities/instl-sncn/model/instl-sncn-interface.ts
@@ -131,4 +131,5 @@ export interface InstlSncnMngService {
   submitReqSupplement: (id: string, payload: InstlSncnApplySaveRequestDto) => Promise<string>;
   remove: (id: string) => Promise<void>;
   changePrgrsSttsComCd: (payload: DocPrgrsUpdateRequestDto) => Promise<void>;
+  rejectPrgrsStts: (payload: DocPrgrsUpdateRequestDto) => Promise<void>;
 }
diff --git a/apps/as/src/pages/fnrs-cnsltn/ui/components/floating-action-buttons.tsx b/apps/as/src/pages/fnrs-cnsltn/ui/components/floating-action-buttons.tsx
index 6d865fb68..2cf9267a4 100644
--- a/apps/as/src/pages/fnrs-cnsltn/ui/components/floating-action-buttons.tsx
+++ b/apps/as/src/pages/fnrs-cnsltn/ui/components/floating-action-buttons.tsx
@@ -462,6 +462,7 @@ function FloatingActionButtons({
       docNo,
       docSeComCd,
       prgrsSttsComCd: "LE",
+      rgtrUuid: userInfo?.userUnqId,
     };
     await executeAction({
       action: FNRS_CNSLTN_VIEW_BUTTON_ACTION.envoSbmsn,
@@ -471,10 +472,14 @@ function FloatingActionButtons({
   }
 
   async function handleRjctClick() {
+    if (!(await confirm("해당 신청 건을 반려하시겠습니까?"))) {
+      return;
+    }
     const payload: DocPrgrsUpdateRequestDto = {
       docNo,
       docSeComCd,
       prgrsSttsComCd: "SV",
+      rgtrUuid: userInfo?.userUnqId,
     };
     await executeAction({
       action: FNRS_CNSLTN_VIEW_BUTTON_ACTION.rjct,
@@ -488,6 +493,7 @@ function FloatingActionButtons({
       docNo,
       docSeComCd,
       prgrsSttsComCd: "TA",
+      rgtrUuid: userInfo?.userUnqId,
     };
     await executeAction({
       action: FNRS_CNSLTN_VIEW_BUTTON_ACTION.sncnAprv,
@@ -1114,6 +1120,17 @@ async function handleChangePrgrsSttsComCd(
   }
 }
 
+async function handleRejectPrgrsStts(
+  context: ActionHandlerContext<DocPrgrsUpdateRequestDto>,
+): Promise<void> {
+  try {
+    await fnrsCnsltnMngService.rejectPrgrsStts(context.request);
+    context.onSuccess?.();
+  } catch (error) {
+    context.onError?.(error as Error);
+  }
+}
+
 async function handleTechReview(
   context: ActionHandlerContext<FnrsCnsltnApplySaveRequestDto>,
 ): Promise<void> {
@@ -1200,7 +1217,7 @@ const buttonActionHandlers: Record<FnrsCnsltnViewButtonAction, ActionHandler> =
   aply: handleSaveApply,
   del: handleDel,
   envoSbmsn: handleChangePrgrsSttsComCd,
-  rjct: handleChangePrgrsSttsComCd,
+  rjct: handleRejectPrgrsStts,
   sncnAprv: handleChangePrgrsSttsComCd,
   rvwRply: handleTechReview,
   rvwOpnnRply: handleTechReview,
diff --git a/apps/as/src/pages/instl-sncn/ui/components/floating-action-buttons.tsx b/apps/as/src/pages/instl-sncn/ui/components/floating-action-buttons.tsx
index a34c23292..3fe70d66c 100644
--- a/apps/as/src/pages/instl-sncn/ui/components/floating-action-buttons.tsx
+++ b/apps/as/src/pages/instl-sncn/ui/components/floating-action-buttons.tsx
@@ -221,10 +221,13 @@ function FloatingActionButtons({
   }
 
   async function handleRjctClick() {
+    if (!(await confirm("해당 신청 건을 반려하시겠습니까?"))) return;
+
     const payload: DocPrgrsUpdateRequestDto = {
       docNo,
       docSeComCd,
       prgrsSttsComCd: "SV",
+      rgtrUuid: userInfo?.userUnqId,
     };
     await executeAction({
       action: INSTL_SNCN_VIEW_BUTTON_ACTION.rjct,
@@ -516,6 +519,17 @@ async function handleChangePrgrsSttsComCd(
   }
 }
 
+async function handleRejectPrgrsStts(
+  context: ActionHandlerContext<DocPrgrsUpdateRequestDto>,
+): Promise<void> {
+  try {
+    await instlSncnService.rejectPrgrsStts(context.request);
+    context.onSuccess?.();
+  } catch (error) {
+    context.onError?.(error as Error);
+  }
+}
+
 async function handleTechReview(
   context: ActionHandlerContext<InstlSncnApplySaveRequestDto>,
 ): Promise<void> {
@@ -566,7 +580,7 @@ const buttonActionHandlers: Record<InstlSncnViewButtonAction, ActionHandler> = {
   aply: handleSaveApply,
   del: handleDel,
   instlSncnAncmnt: handleChangePrgrsSttsComCd,
-  rjct: handleChangePrgrsSttsComCd,
+  rjct: handleRejectPrgrsStts,
   sncnAprv: handleChangePrgrsSttsComCd,
   rvwRply: handleTechReview,
   rqstTechRvw: handleChangePrgrsSttsComCd,
diff --git a/apps/as/src/shared/model/pbadms-sprt.ts b/apps/as/src/shared/model/pbadms-sprt.ts
index 32070e7e6..c0b605685 100644
--- a/apps/as/src/shared/model/pbadms-sprt.ts
+++ b/apps/as/src/shared/model/pbadms-sprt.ts
@@ -6,6 +6,8 @@ export interface DocPrgrsUpdateRequestDto {
   docSeComCd: string;
   /** 진행상태공통코드 */
   prgrsSttsComCd: string;
+  /** 작성자 UUID */
+  rgtrUuid?: string;
 }
 
 /** 공종 트리와 사업규모(수량) 조합 DTO */