diff --git a/changelogs/fragments/518-docker_container_exec-workdir.yml b/changelogs/fragments/518-docker_container_exec-workdir.yml
new file mode 100644
index 00000000..807a6192
--- /dev/null
+++ b/changelogs/fragments/518-docker_container_exec-workdir.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - "docker_container_exec - fix ``chdir`` option which was ignored since community.docker 3.0.0 (https://github.com/ansible-collections/community.docker/issues/517, https://github.com/ansible-collections/community.docker/pull/518)."
diff --git a/plugins/modules/docker_container_exec.py b/plugins/modules/docker_container_exec.py
index 003cc252..b39646d9 100644
--- a/plugins/modules/docker_container_exec.py
+++ b/plugins/modules/docker_container_exec.py
@@ -250,6 +250,9 @@ def main():
             'Cmd': argv,
             'Env': format_environment(env) if env is not None else None,
         }
+        if chdir is not None:
+            data['WorkingDir'] = chdir
+
         exec_data = client.post_json_to_json('/containers/{0}/exec', container, data=data)
         exec_id = exec_data['Id']