diff --git a/packages/grpc-js/src/load-balancing-call.ts b/packages/grpc-js/src/load-balancing-call.ts
index 9940500b..76476975 100644
--- a/packages/grpc-js/src/load-balancing-call.ts
+++ b/packages/grpc-js/src/load-balancing-call.ts
@@ -121,7 +121,8 @@ export class LoadBalancingCall implements Call, DeadlineInfoProvider {
           status.code +
           ' details="' +
           status.details +
-          '"'
+          '" start time=' +
+          this.startTime.toISOString()
       );
       const finalStatus = { ...status, progress };
       this.listener?.onReceiveStatus(finalStatus);
diff --git a/packages/grpc-js/src/retrying-call.ts b/packages/grpc-js/src/retrying-call.ts
index 14969916..1c5ffaa4 100644
--- a/packages/grpc-js/src/retrying-call.ts
+++ b/packages/grpc-js/src/retrying-call.ts
@@ -261,7 +261,8 @@ export class RetryingCall implements Call, DeadlineInfoProvider {
         statusObject.code +
         ' details="' +
         statusObject.details +
-        '"'
+        '" start time=' +
+        this.startTime.toISOString()
     );
     this.bufferTracker.freeAll(this.callNumber);
     this.writeBufferOffset = this.writeBufferOffset + this.writeBuffer.length;