diff --git a/frontend/package.json b/frontend/package.json
index 6e13b14..450ebe5 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -39,5 +39,6 @@
     "vite-plugin-vuetify": "^2.0.0",
     "vue-router": "^4.2.0",
     "vue-tsc": "^1.8.0"
-  }
+  },
+  "packageManager": "yarn@1.22.21+sha1.1959a18351b811cdeedbd484a8f86c3cc3bbaf72"
 }
diff --git a/frontend/src/pages/workers/index.vue b/frontend/src/pages/workers/index.vue
index 338410d..fa55f1e 100644
--- a/frontend/src/pages/workers/index.vue
+++ b/frontend/src/pages/workers/index.vue
@@ -43,6 +43,10 @@
               <router-link :to="{ path: `/jobs/${(item as Worker).running_job_id}` }">
                 # {{ (item as Worker).running_job_id }}
               </router-link>
+              {{ 
+                (item as Worker).running_job_assign_time !== null && (item as Worker).running_job_assign_time !== undefined ?
+                  " since " + new TimeAgo('en-US').format(new Date((item as Worker).running_job_assign_time)) : ""
+              }}
             </div>
           </template>
         </v-data-table-server>
@@ -78,6 +82,7 @@
     memory_bytes: number;
     disk_free_space_bytes: number;
     running_job_id: number;
+    running_job_assign_time: string;
   }
 
   export default {
diff --git a/server/src/routes/worker.rs b/server/src/routes/worker.rs
index cedcc0d..073ddb9 100644
--- a/server/src/routes/worker.rs
+++ b/server/src/routes/worker.rs
@@ -49,6 +49,7 @@ pub struct WorkerListResponseItem {
     last_heartbeat_time: DateTime<Utc>,
     // status
     running_job_id: Option<i32>,
+    running_job_assign_time: Option<chrono::DateTime<chrono::Utc>>,
 }
 
 #[derive(Serialize)]
@@ -114,7 +115,8 @@ pub async fn worker_list(
                     disk_free_space_bytes: worker.disk_free_space_bytes,
                     is_live: worker.last_heartbeat_time > deadline,
                     last_heartbeat_time: worker.last_heartbeat_time,
-                    running_job_id: job.map(|job| job.id),
+                    running_job_id: job.as_ref().map(|job| job.id),
+                    running_job_assign_time: job.and_then(|job| job.assign_time),
                 });
             }