diff --git a/services/domain/Big.Application/ExpireRegistrationWorker.cs b/services/domain/Big.Application/ExpireRegistrationWorker.cs
index 6e900e7..05f8b94 100644
--- a/services/domain/Big.Application/ExpireRegistrationWorker.cs
+++ b/services/domain/Big.Application/ExpireRegistrationWorker.cs
@@ -12,9 +12,11 @@ namespace Big.Application;
 public sealed class ExpireRegistrationWorker(IRegistrationStore store)
 {
     /// <summary>
-    /// Process the job. Idempotent: a redelivered job whose registration is already VERLOPEN is a
-    /// no-op — not persisted again (§8.6, at-least-once delivery). An unknown registration is an error:
-    /// it throws, leaving the job un-completed for Flowable to redeliver.
+    /// Process the job. Idempotent and tolerant of races (§8.6, at-least-once delivery): a job whose
+    /// registration is already resolved — a redelivered expiry (VERLOPEN), or one withdrawn/decided
+    /// while it waited (INGETROKKEN/INGESCHREVEN/AFGEWEZEN) — is a no-op, so the job still completes
+    /// rather than throwing into a redelivery loop. Only a still-open registration is expired. An
+    /// unknown registration is an error: it throws, leaving the job un-completed for Flowable to redeliver.
     /// </summary>
     public async Task HandleAsync(RegistratieVerlopenJob job, CancellationToken ct = default)
     {
@@ -24,8 +26,9 @@ public sealed class ExpireRegistrationWorker(IRegistrationStore store)
             ?? throw new InvalidOperationException(
                 $"No registration {job.RegistrationId} for RegistratieVerlopen job {job.JobId}.");
 
-        // A redelivered job whose registration is already VERLOPEN completes without persisting again.
-        if (registration.Status == RegistrationStatus.Verlopen)
+        // Only a still-open registration lapses; an already-resolved one (expired, or withdrawn/decided
+        // while it waited) is left untouched so the job can complete without violating the aggregate.
+        if (registration.Status is not (RegistrationStatus.Ingediend or RegistrationStatus.InBehandeling))
             return;
 
         registration.Expire();