diff --git a/wa/framework/output.py b/wa/framework/output.py
index c29c5912..6cb43fc6 100644
--- a/wa/framework/output.py
+++ b/wa/framework/output.py
@@ -263,6 +263,13 @@ class RunOutput(Output):
                 return spec
         return None
 
+    def list_workloads(self):
+        workloads = []
+        for job in self.jobs:
+            if job.label not in workloads:
+                workloads.append(job.label)
+        return workloads
+
 
 class JobOutput(Output):