diff --git a/ReviewSLA/run.js b/ReviewSLA/run.js
index af6529a..892291a 100644
--- a/ReviewSLA/run.js
+++ b/ReviewSLA/run.js
@@ -96,6 +96,8 @@ async function reassign({ github, core, owner, inputs, teams, clock, stack, out,
     await github.rest.issues.removeAssignees({ owner, repo: p.repo, issue_number: p.number, assignees: [login] });
     await github.rest.issues.addAssignees({ owner, repo: p.repo, issue_number: p.number, assignees: [chosen.login] });
     p.assignees = [...p.assignees.filter((l) => l !== login), chosen.login];
+    // Someone whose approval already stands owes nothing here, so a request would only ask them again.
+    if (approvedAt(p, chosen.login)) continue;
     try {
       await github.rest.pulls.requestReviewers({ owner, repo: p.repo, pull_number: p.number, reviewers: [chosen.login] });
     } catch (error) {
diff --git a/ReviewSLA/run.test.js b/ReviewSLA/run.test.js
index 620cac8..ab58d1d 100644
--- a/ReviewSLA/run.test.js
+++ b/ReviewSLA/run.test.js
@@ -227,6 +227,20 @@ test('an assignee who is out keeps the PRs they already approved', async () => {
   assert.strictEqual(notice.issue_number, 2);
 });
 
+test('the new assignee isn\'t asked again on a PR they\'ve already approved', async () => {
+  // mhamilton approved #1 without being assigned; #2 above it still needs their review.
+  const w = world({
+    prs: [
+      onePr({ timeline: [reviewItem('mhamilton', 'APPROVED', '2026-10-01T17:30:00Z')] }),
+      { number: 2, head: 'feature/b', base: 'feature/a', assignees: ['ghopper', 'kjohnson'] },
+    ],
+    out: [['Person ghopper', '2026-10-01']],
+  });
+  await go(w, { now: '2026-10-01T18:00:00Z' });
+  assert.deepStrictEqual(w.calls.assign, [[1, 'mhamilton'], [2, 'mhamilton']]);
+  assert.deepStrictEqual(w.calls.requested, [[2, 'mhamilton']]);
+});
+
 test('on a public repo, the reassignment notice doesn\'t say the person is out', async () => {
   const w = world({ prs: [onePr()], out: [['Person ghopper', '2026-10-01']], isPrivate: false });
   await go(w, { now: '2026-10-01T18:00:00Z' });