diff --git a/infrastructure/abri/abri_client.py b/infrastructure/abri/abri_client.py
index 3b85903d0..e6863386f 100644
--- a/infrastructure/abri/abri_client.py
+++ b/infrastructure/abri/abri_client.py
@@ -98,7 +98,19 @@ class AbriClient:
         return self._parse_appointment_amended(outcome)
 
     def abandon_job(self, request: AbandonJobRequest) -> AbandonJobResult:
-        raise NotImplementedError
+        outcome = self._exchange(
+            request_type="canceljob",
+            parameters=[
+                ("job_no", request.job_no),
+                ("abandon_reason", request.reason.value),
+                ("date_abandoned", _format_appointment_date(request.date_abandoned)),
+            ],
+        )
+
+        if isinstance(outcome, AbriRequestRejected):
+            return outcome
+
+        return self._parse_job_abandoned(outcome)
 
     def get_tenant_data(self, place_ref: PlaceRef) -> GetTenantDataResult:
         outcome = self._exchange(
@@ -197,6 +209,22 @@ class AbriClient:
             appointment_time=appointment_time,
         )
 
+    @staticmethod
+    def _parse_job_abandoned(root: ET.Element) -> JobAbandoned:
+        job_cancelled = root.find(".//JobCancelled")
+
+        if job_cancelled is None:
+            raise AbriResponseParseError(
+                "JobCancelled element missing from relay response"
+            )
+
+        job_no = job_cancelled.get("job_no")
+
+        if job_no is None:
+            raise AbriResponseParseError("JobCancelled element missing job_no")
+
+        return JobAbandoned(job_no=job_no)
+
     @staticmethod
     def _parse_tenancy_data(root: ET.Element) -> TenancyData:
         tenancies = root.findall("Tenancy")