diff --git a/.github/workflows/sim-label.yml b/.github/workflows/sim-label.yml
new file mode 100644
index 00000000000..9e62619af54
--- /dev/null
+++ b/.github/workflows/sim-label.yml
@@ -0,0 +1,51 @@
+name: SimLabeled
+on:
+  pull_request:
+    types: [ labeled ]
+
+jobs:
+  cleanup-runs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: rokroskar/workflow-run-cleanup-action@master
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+#    if: "!startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/main'"
+
+  newbuild:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v2.1.3
+        with:
+          go-version: 1.16
+      - name: Install runsim
+        run: export GO111MODULE="on" && go get github.com/cosmos/tools/cmd/runsim@v1.0.0
+      - uses: actions/cache@v1
+        with:
+          path: ~/go/bin
+          key: ${{ runner.os }}-go-runsim-binary
+
+  test-sim-nondeterminism:
+    if: ${{ github.event.label.name == 'sim' }}
+    runs-on: ubuntu-latest
+    needs: newbuild
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2.1.3
+        with:
+          go-version: 1.16
+      - uses: technote-space/get-diff-action@v4
+        with:
+          PATTERNS: |
+            **/**.go
+            go.mod
+            go.sum
+      - uses: actions/cache@v1
+        with:
+          path: ~/go/bin
+          key: ${{ runner.os }}-go-runsim-binary
+        if: "env.GIT_DIFF != ''"
+      - name: test nondeterminism
+        run: |
+          make test-sim-nondeterminism
+        if: "env.GIT_DIFF != ''"
\ No newline at end of file