diff --git a/src/components/main/MainEventCalendar.vue b/src/components/main/MainEventCalendar.vue
index b417595..9c117c3 100644
--- a/src/components/main/MainEventCalendar.vue
+++ b/src/components/main/MainEventCalendar.vue
@@ -14,7 +14,14 @@
                         {{ user.name }}
                     </p>
 
-                    <CommuterBtn :userId="user.id" :checkedInProject="checkedInProject || {}" ref="workTimeComponentRef" />
+                    <CommuterBtn
+                        ref="workTimeComponentRef"
+                        :userId="user.id"
+                        :checkedInProject="checkedInProject || {}"
+                        :pendingProjectChange="pendingProjectChange"
+                        @update:pendingProjectChange="pendingProjectChange = $event"
+                        @leaveTimeUpdated="handleLeaveTimeUpdate"
+                    />
 
                     <MainEventList
                         :categoryList="categoryList"
@@ -99,6 +106,7 @@
 
     const selectedProject = ref(null);
     const checkedInProject = ref(null);
+    const pendingProjectChange = ref(null);
 
     // 이벤트 모달 관련
     const showModal = ref(false);
@@ -605,10 +613,48 @@
             if (newProject) {
                 selectedProject.value = newProject.PROJCTSEQ;
                 checkedInProject.value = newProject;
+            } else {
+                selectedProject.value = null;
+                checkedInProject.value = null;
             }
         },
     );
 
+    const handleLeaveTimeUpdate = async event => {
+        const memberSeq = user.value.id;
+        if (!memberSeq) return;
+
+        // 현 사용자 프로젝트 퇴근기록 확인
+        const { data } = await $api.post('main/getUserLeaveRecord', {
+            memberSeq: memberSeq,
+        });
+
+        const res = data?.data;
+        if (res && !res?.COMMUTLVE) {
+            await projectStore.getMemberProjects();
+
+            if (projectStore.activeMemberProjectList.length > 0) {
+                const previousProject =
+                    projectStore.activeMemberProjectList.find(p => res.MEMBERSEQ === user.value.id && res.PROJCTLVE === p.PROJCTSEQ) ||
+                    projectStore.activeMemberProjectList[0]; // 이전 출근 프로젝트가 없으면 첫 번째 프로젝트
+
+                if (previousProject) {
+                    selectedProject.value = previousProject.PROJCTSEQ;
+                    projectStore.setSelectedProject(previousProject);
+                } else if (projectStore.activeProjectList.length > 0) {
+                    selectedProject.value = projectStore.activeProjectList[0].PROJCTSEQ;
+                    projectStore.setSelectedProject(projectStore.activeProjectList[0]);
+                } else {
+                    selectedProject.value = null;
+                    projectStore.setSelectedProject(null);
+                }
+            } else {
+                selectedProject.value = null;
+                projectStore.setSelectedProject(null);
+            }
+        }
+    };
+
     onMounted(async () => {
         await userStore.userInfo();
         user.value = userStore.user;