diff --git a/src/Runner.Worker/JobRunner.cs b/src/Runner.Worker/JobRunner.cs
index 737ad6d85..2a540a730 100644
--- a/src/Runner.Worker/JobRunner.cs
+++ b/src/Runner.Worker/JobRunner.cs
@@ -150,6 +150,11 @@ namespace GitHub.Runner.Worker
                 _runnerSettings = HostContext.GetService<IConfigurationStore>().GetSettings();
                 jobContext.SetRunnerContext("name", _runnerSettings.AgentName);
 
+                if (jobContext.Global.Variables.TryGetValue(WellKnownDistributedTaskVariables.RunnerEnvironment, out var runnerEnvironment))
+                {
+                    jobContext.SetRunnerContext("environment", runnerEnvironment);
+                }
+
                 string toolsDirectory = HostContext.GetDirectory(WellKnownDirectory.Tools);
                 Directory.CreateDirectory(toolsDirectory);
                 jobContext.SetRunnerContext("tool_cache", toolsDirectory);
diff --git a/src/Sdk/DTWebApi/WebApi/WellKnownDistributedTaskVariables.cs b/src/Sdk/DTWebApi/WebApi/WellKnownDistributedTaskVariables.cs
index 2b487e782..213117285 100644
--- a/src/Sdk/DTWebApi/WebApi/WellKnownDistributedTaskVariables.cs
+++ b/src/Sdk/DTWebApi/WebApi/WellKnownDistributedTaskVariables.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 
 namespace GitHub.DistributedTask.WebApi
 {
@@ -6,5 +6,6 @@ namespace GitHub.DistributedTask.WebApi
     {
         public static readonly String JobId = "system.jobId";
         public static readonly String RunnerLowDiskspaceThreshold = "system.runner.lowdiskspacethreshold";
+        public static readonly String RunnerEnvironment = "system.runnerEnvironment";
     }
 }