diff --git a/CHANGELOG.md b/CHANGELOG.md
index d07223fffd14b..03a65c552886f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -94,6 +94,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix typo super->sb in method toString() of RemoteStoreNodeAttribute ([#15362](https://github.com/opensearch-project/OpenSearch/pull/15362))
 - Fix array hashCode calculation in ResyncReplicationRequest ([#16378](https://github.com/opensearch-project/OpenSearch/pull/16378))
 - [Workload Management] Enhance rejection mechanism in workload management ([#16417](https://github.com/opensearch-project/OpenSearch/pull/16417))
+- [Workload Management] Fixing Create/Update QueryGroup TransportActions to execute from non-cluster manager nodes ([16422](https://github.com/opensearch-project/OpenSearch/pull/16422))
 
 ### Security
 
diff --git a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupRequest.java b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupRequest.java
index d92283391dd3b..1ce04faa7ccc1 100644
--- a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupRequest.java
+++ b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/CreateQueryGroupRequest.java
@@ -8,8 +8,8 @@
 
 package org.opensearch.plugin.wlm.action;
 
-import org.opensearch.action.ActionRequest;
 import org.opensearch.action.ActionRequestValidationException;
+import org.opensearch.action.support.clustermanager.ClusterManagerNodeRequest;
 import org.opensearch.cluster.metadata.QueryGroup;
 import org.opensearch.common.UUIDs;
 import org.opensearch.core.common.io.stream.StreamInput;
@@ -33,7 +33,7 @@
  *
  * @opensearch.experimental
  */
-public class CreateQueryGroupRequest extends ActionRequest {
+public class CreateQueryGroupRequest extends ClusterManagerNodeRequest<CreateQueryGroupRequest> {
     private final QueryGroup queryGroup;
 
     /**
diff --git a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportCreateQueryGroupAction.java b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportCreateQueryGroupAction.java
index 190ff17261bb4..dff9c429d63b0 100644
--- a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportCreateQueryGroupAction.java
+++ b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportCreateQueryGroupAction.java
@@ -9,43 +9,82 @@
 package org.opensearch.plugin.wlm.action;
 
 import org.opensearch.action.support.ActionFilters;
-import org.opensearch.action.support.HandledTransportAction;
+import org.opensearch.action.support.clustermanager.TransportClusterManagerNodeAction;
+import org.opensearch.cluster.ClusterState;
+import org.opensearch.cluster.block.ClusterBlockException;
+import org.opensearch.cluster.block.ClusterBlockLevel;
+import org.opensearch.cluster.metadata.IndexNameExpressionResolver;
 import org.opensearch.common.inject.Inject;
 import org.opensearch.core.action.ActionListener;
+import org.opensearch.core.common.io.stream.StreamInput;
 import org.opensearch.plugin.wlm.service.QueryGroupPersistenceService;
-import org.opensearch.tasks.Task;
+import org.opensearch.threadpool.ThreadPool;
 import org.opensearch.transport.TransportService;
 
+import java.io.IOException;
+
+import static org.opensearch.threadpool.ThreadPool.Names.SAME;
+
 /**
  * Transport action to create QueryGroup
  *
  * @opensearch.experimental
  */
-public class TransportCreateQueryGroupAction extends HandledTransportAction<CreateQueryGroupRequest, CreateQueryGroupResponse> {
+public class TransportCreateQueryGroupAction extends TransportClusterManagerNodeAction<CreateQueryGroupRequest, CreateQueryGroupResponse> {
 
     private final QueryGroupPersistenceService queryGroupPersistenceService;
 
     /**
      * Constructor for TransportCreateQueryGroupAction
      *
-     * @param actionName - action name
+     * @param threadPool - {@link ThreadPool} object
      * @param transportService - a {@link TransportService} object
      * @param actionFilters - a {@link ActionFilters} object
+     * @param indexNameExpressionResolver - {@link IndexNameExpressionResolver} object
      * @param queryGroupPersistenceService - a {@link QueryGroupPersistenceService} object
      */
     @Inject
     public TransportCreateQueryGroupAction(
-        String actionName,
+        ThreadPool threadPool,
         TransportService transportService,
         ActionFilters actionFilters,
+        IndexNameExpressionResolver indexNameExpressionResolver,
         QueryGroupPersistenceService queryGroupPersistenceService
     ) {
-        super(CreateQueryGroupAction.NAME, transportService, actionFilters, CreateQueryGroupRequest::new);
+        super(
+            CreateQueryGroupAction.NAME,
+            transportService,
+            queryGroupPersistenceService.getClusterService(),
+            threadPool,
+            actionFilters,
+            CreateQueryGroupRequest::new,
+            indexNameExpressionResolver
+        );
         this.queryGroupPersistenceService = queryGroupPersistenceService;
     }
 
     @Override
-    protected void doExecute(Task task, CreateQueryGroupRequest request, ActionListener<CreateQueryGroupResponse> listener) {
+    protected void clusterManagerOperation(
+        CreateQueryGroupRequest request,
+        ClusterState clusterState,
+        ActionListener<CreateQueryGroupResponse> listener
+    ) {
         queryGroupPersistenceService.persistInClusterStateMetadata(request.getQueryGroup(), listener);
     }
+
+    @Override
+    protected String executor() {
+        return SAME;
+    }
+
+    @Override
+    protected CreateQueryGroupResponse read(StreamInput in) throws IOException {
+        return new CreateQueryGroupResponse(in);
+    }
+
+    @Override
+    protected ClusterBlockException checkBlock(CreateQueryGroupRequest request, ClusterState state) {
+        return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
+    }
+
 }
diff --git a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportUpdateQueryGroupAction.java b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportUpdateQueryGroupAction.java
index a6aa2da8fdc08..09a0da7086b36 100644
--- a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportUpdateQueryGroupAction.java
+++ b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/TransportUpdateQueryGroupAction.java
@@ -9,43 +9,81 @@
 package org.opensearch.plugin.wlm.action;
 
 import org.opensearch.action.support.ActionFilters;
-import org.opensearch.action.support.HandledTransportAction;
+import org.opensearch.action.support.clustermanager.TransportClusterManagerNodeAction;
+import org.opensearch.cluster.ClusterState;
+import org.opensearch.cluster.block.ClusterBlockException;
+import org.opensearch.cluster.block.ClusterBlockLevel;
+import org.opensearch.cluster.metadata.IndexNameExpressionResolver;
 import org.opensearch.common.inject.Inject;
 import org.opensearch.core.action.ActionListener;
+import org.opensearch.core.common.io.stream.StreamInput;
 import org.opensearch.plugin.wlm.service.QueryGroupPersistenceService;
-import org.opensearch.tasks.Task;
+import org.opensearch.threadpool.ThreadPool;
 import org.opensearch.transport.TransportService;
 
+import java.io.IOException;
+
+import static org.opensearch.threadpool.ThreadPool.Names.SAME;
+
 /**
  * Transport action to update QueryGroup
  *
  * @opensearch.experimental
  */
-public class TransportUpdateQueryGroupAction extends HandledTransportAction<UpdateQueryGroupRequest, UpdateQueryGroupResponse> {
+public class TransportUpdateQueryGroupAction extends TransportClusterManagerNodeAction<UpdateQueryGroupRequest, UpdateQueryGroupResponse> {
 
     private final QueryGroupPersistenceService queryGroupPersistenceService;
 
     /**
      * Constructor for TransportUpdateQueryGroupAction
      *
-     * @param actionName - action name
+     * @param threadPool - {@link ThreadPool} object
      * @param transportService - a {@link TransportService} object
      * @param actionFilters - a {@link ActionFilters} object
+     * @param indexNameExpressionResolver - {@link IndexNameExpressionResolver} object
      * @param queryGroupPersistenceService - a {@link QueryGroupPersistenceService} object
      */
     @Inject
     public TransportUpdateQueryGroupAction(
-        String actionName,
+        ThreadPool threadPool,
         TransportService transportService,
         ActionFilters actionFilters,
+        IndexNameExpressionResolver indexNameExpressionResolver,
         QueryGroupPersistenceService queryGroupPersistenceService
     ) {
-        super(UpdateQueryGroupAction.NAME, transportService, actionFilters, UpdateQueryGroupRequest::new);
+        super(
+            UpdateQueryGroupAction.NAME,
+            transportService,
+            queryGroupPersistenceService.getClusterService(),
+            threadPool,
+            actionFilters,
+            UpdateQueryGroupRequest::new,
+            indexNameExpressionResolver
+        );
         this.queryGroupPersistenceService = queryGroupPersistenceService;
     }
 
     @Override
-    protected void doExecute(Task task, UpdateQueryGroupRequest request, ActionListener<UpdateQueryGroupResponse> listener) {
+    protected void clusterManagerOperation(
+        UpdateQueryGroupRequest request,
+        ClusterState clusterState,
+        ActionListener<UpdateQueryGroupResponse> listener
+    ) {
         queryGroupPersistenceService.updateInClusterStateMetadata(request, listener);
     }
+
+    @Override
+    protected String executor() {
+        return SAME;
+    }
+
+    @Override
+    protected UpdateQueryGroupResponse read(StreamInput in) throws IOException {
+        return new UpdateQueryGroupResponse(in);
+    }
+
+    @Override
+    protected ClusterBlockException checkBlock(UpdateQueryGroupRequest request, ClusterState state) {
+        return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
+    }
 }
diff --git a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/UpdateQueryGroupRequest.java b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/UpdateQueryGroupRequest.java
index 048b599f095fd..18af58289be13 100644
--- a/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/UpdateQueryGroupRequest.java
+++ b/plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/action/UpdateQueryGroupRequest.java
@@ -8,8 +8,8 @@
 
 package org.opensearch.plugin.wlm.action;
 
-import org.opensearch.action.ActionRequest;
 import org.opensearch.action.ActionRequestValidationException;
+import org.opensearch.action.support.clustermanager.ClusterManagerNodeRequest;
 import org.opensearch.cluster.metadata.QueryGroup;
 import org.opensearch.core.common.io.stream.StreamInput;
 import org.opensearch.core.common.io.stream.StreamOutput;
@@ -23,7 +23,7 @@
  *
  * @opensearch.experimental
  */
-public class UpdateQueryGroupRequest extends ActionRequest {
+public class UpdateQueryGroupRequest extends ClusterManagerNodeRequest<UpdateQueryGroupRequest> {
     private final String name;
     private final MutableQueryGroupFragment mutableQueryGroupFragment;