diff --git a/proto/agynio/api/runners/v1/runners.proto b/proto/agynio/api/runners/v1/runners.proto
index e7361f2..bf4c683 100644
--- a/proto/agynio/api/runners/v1/runners.proto
+++ b/proto/agynio/api/runners/v1/runners.proto
@@ -162,12 +162,20 @@ message EnrollRunnerResponse {
 enum WorkloadStatus {
   WORKLOAD_STATUS_UNSPECIFIED = 0;
   WORKLOAD_STATUS_STARTING = 1;
+  // Container is up and healthy. This does not imply the agent is actively
+  // processing; see Workload.agent_state.
   WORKLOAD_STATUS_RUNNING = 2;
   WORKLOAD_STATUS_STOPPING = 3;
   WORKLOAD_STATUS_STOPPED = 4;
   WORKLOAD_STATUS_FAILED = 5;
 }
 
+enum WorkloadAgentState {
+  WORKLOAD_AGENT_STATE_UNSPECIFIED = 0;
+  WORKLOAD_AGENT_STATE_PROCESSING = 1;
+  WORKLOAD_AGENT_STATE_IDLE = 2;
+}
+
 enum WorkloadFailureReason {
   WORKLOAD_FAILURE_REASON_UNSPECIFIED = 0;
   WORKLOAD_FAILURE_REASON_START_FAILED = 1;
@@ -233,6 +241,7 @@ message Workload {
   string agent_name = 17;
   // Denormalized display name for runner_id.
   string runner_name = 18;
+  WorkloadAgentState agent_state = 19;
 }
 
 message CreateWorkloadRequest {