diff --git a/pkg/proxy/server.go b/pkg/proxy/server.go
index 0c6fe645bd6..df052187227 100644
--- a/pkg/proxy/server.go
+++ b/pkg/proxy/server.go
@@ -118,6 +118,8 @@ func (s *Server) PrepareRun(ctx context.Context) (preparedServer, error) {
 	return preparedServer{s}, nil
 }
 
+const workerCount = 10
+
 func (s preparedServer) Run(ctx context.Context) error {
 	logger := klog.FromContext(ctx).WithValues("component", "proxy")
 
@@ -132,7 +134,7 @@ func (s preparedServer) Run(ctx context.Context) error {
 	}
 
 	// start index
-	go s.IndexController.Start(ctx, 2)
+	go s.IndexController.Start(ctx, workerCount)
 
 	s.KcpSharedInformerFactory.Start(ctx.Done())
 	s.KcpSharedInformerFactory.WaitForCacheSync(ctx.Done())
diff --git a/pkg/server/controllers.go b/pkg/server/controllers.go
index 0995c7f0531..4efa1f44f15 100644
--- a/pkg/server/controllers.go
+++ b/pkg/server/controllers.go
@@ -85,6 +85,9 @@ import (
 	kcpinformers "github.com/kcp-dev/kcp/sdk/client/informers/externalversions"
 )
 
+// Default worker count for all controllers.
+const workerCount = 10
+
 type RunFunc func(ctx context.Context)
 type WaitFunc func(ctx context.Context, s *Server) error
 
@@ -146,7 +149,7 @@ func (s *Server) installClusterRoleAggregationController(ctx context.Context, co
 	return s.registerController(&controllerWrapper{
 		Name: controllerName,
 		Runner: func(ctx context.Context) {
-			c.Run(ctx, 5)
+			c.Run(ctx, workerCount)
 		},
 	})
 }
@@ -190,7 +193,7 @@ func (s *Server) installKubeNamespaceController(ctx context.Context, config *res
 	return s.registerController(&controllerWrapper{
 		Name: controllerName,
 		Runner: func(ctx context.Context) {
-			c.Run(ctx, 10)
+			c.Run(ctx, workerCount)
 		},
 	})
 }
@@ -216,7 +219,7 @@ func (s *Server) installKubeServiceAccountController(ctx context.Context, config
 	return s.registerController(&controllerWrapper{
 		Name: controllerName,
 		Runner: func(ctx context.Context) {
-			c.Run(ctx, 1)
+			c.Run(ctx, workerCount)
 		},
 	})
 }
@@ -308,7 +311,7 @@ func (s *Server) installRootCAConfigMapController(ctx context.Context, config *r
 	return s.registerController(&controllerWrapper{
 		Name: controllerName,
 		Runner: func(ctx context.Context) {
-			c.Run(ctx, 2)
+			c.Run(ctx, workerCount)
 		},
 	})
 }
@@ -342,7 +345,7 @@ func (s *Server) installTenancyLogicalClusterController(ctx context.Context, con
 	return s.registerController(&controllerWrapper{
 		Name: tenancylogicalcluster.ControllerName,
 		Runner: func(ctx context.Context) {
-			controller.Start(ctx, 10)
+			controller.Start(ctx, workerCount)
 		},
 	})
 }
@@ -386,7 +389,7 @@ func (s *Server) installLogicalClusterDeletionController(ctx context.Context, co
 	return s.registerController(&controllerWrapper{
 		Name: logicalclusterdeletion.ControllerName,
 		Runner: func(ctx context.Context) {
-			logicalClusterDeletionController.Start(ctx, 10)
+			logicalClusterDeletionController.Start(ctx, workerCount)
 		},
 	})
 }
@@ -428,7 +431,7 @@ func (s *Server) installWorkspaceScheduler(ctx context.Context, config *rest.Con
 	if err := s.registerController(&controllerWrapper{
 		Name: workspace.ControllerName,
 		Runner: func(ctx context.Context) {
-			workspaceController.Start(ctx, 2)
+			workspaceController.Start(ctx, workerCount)
 		},
 	}); err != nil {
 		return err
@@ -455,7 +458,7 @@ func (s *Server) installWorkspaceScheduler(ctx context.Context, config *rest.Con
 		if err := s.registerController(&controllerWrapper{
 			Name: shard.ControllerName,
 			Runner: func(ctx context.Context) {
-				workspaceShardController.Start(ctx, 2)
+				workspaceShardController.Start(ctx, workerCount)
 			},
 		}); err != nil {
 			return err
@@ -481,7 +484,7 @@ func (s *Server) installWorkspaceScheduler(ctx context.Context, config *rest.Con
 	if err := s.registerController(&controllerWrapper{
 		Name: workspacetype.ControllerName,
 		Runner: func(ctx context.Context) {
-			workspaceTypeController.Start(ctx, 2)
+			workspaceTypeController.Start(ctx, workerCount)
 		},
 	}); err != nil {
 		return err
@@ -518,7 +521,7 @@ func (s *Server) installWorkspaceScheduler(ctx context.Context, config *rest.Con
 	return s.registerController(&controllerWrapper{
 		Name: universalControllerName,
 		Runner: func(ctx context.Context) {
-			universalController.Start(ctx, 2)
+			universalController.Start(ctx, workerCount)
 		},
 	})
 }
@@ -555,7 +558,7 @@ func (s *Server) installWorkspaceMountsScheduler(ctx context.Context, config *re
 	return s.registerController(&controllerWrapper{
 		Name: workspacemounts.ControllerName,
 		Runner: func(ctx context.Context) {
-			workspaceMountsController.Start(ctx, 2)
+			workspaceMountsController.Start(ctx, workerCount)
 		},
 	})
 }
@@ -580,7 +583,7 @@ func (s *Server) installLogicalCluster(ctx context.Context, config *rest.Config)
 	return s.registerController(&controllerWrapper{
 		Name: logicalclusterctrl.ControllerName,
 		Runner: func(ctx context.Context) {
-			logicalClusterController.Start(ctx, 2)
+			logicalClusterController.Start(ctx, workerCount)
 		},
 	})
 }
@@ -633,7 +636,7 @@ func (s *Server) installAPIBindingController(ctx context.Context, config *rest.C
 			})
 		},
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	}); err != nil {
 		return err
@@ -666,7 +669,7 @@ func (s *Server) installAPIBindingController(ctx context.Context, config *rest.C
 	if err := s.registerController(&controllerWrapper{
 		Name: permissionclaimlabel.ControllerName,
 		Runner: func(ctx context.Context) {
-			permissionClaimLabelController.Start(ctx, 5)
+			permissionClaimLabelController.Start(ctx, workerCount)
 		},
 	}); err != nil {
 		return err
@@ -698,7 +701,7 @@ func (s *Server) installAPIBindingController(ctx context.Context, config *rest.C
 	if err := s.registerController(&controllerWrapper{
 		Name: permissionclaimlabel.ResourceControllerName,
 		Runner: func(ctx context.Context) {
-			permissionClaimLabelResourceController.Start(ctx, 2)
+			permissionClaimLabelResourceController.Start(ctx, workerCount)
 		},
 	}); err != nil {
 		return err
@@ -724,7 +727,7 @@ func (s *Server) installAPIBindingController(ctx context.Context, config *rest.C
 	return s.registerController(&controllerWrapper{
 		Name: apibindingdeletion.ControllerName,
 		Runner: func(ctx context.Context) {
-			apibindingDeletionController.Start(ctx, 10)
+			apibindingDeletionController.Start(ctx, workerCount)
 		},
 	})
 }
@@ -789,8 +792,7 @@ func (s *Server) installAPIBinderController(ctx context.Context, config *rest.Co
 		Runner: func(ctx context.Context) {
 			initializingWorkspacesKcpInformers.Start(ctx.Done())
 			initializingWorkspacesKcpInformers.WaitForCacheSync(ctx.Done())
-
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -816,7 +818,7 @@ func (s *Server) installCRDCleanupController(ctx context.Context, config *rest.C
 	return s.registerController(&controllerWrapper{
 		Name: crdcleanup.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -858,7 +860,7 @@ func (s *Server) installAPIExportController(ctx context.Context, config *rest.Co
 			})
 		},
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -880,7 +882,7 @@ func (s *Server) installApisReplicateClusterRoleControllers(ctx context.Context,
 	return s.registerController(&controllerWrapper{
 		Name: apisreplicateclusterrole.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -903,7 +905,7 @@ func (s *Server) installCoreReplicateClusterRoleControllers(ctx context.Context,
 	return s.registerController(&controllerWrapper{
 		Name: coresreplicateclusterrole.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -925,7 +927,7 @@ func (s *Server) installApisReplicateClusterRoleBindingControllers(ctx context.C
 	return s.registerController(&controllerWrapper{
 		Name: apisreplicateclusterrolebinding.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -947,7 +949,7 @@ func (s *Server) installApisReplicateLogicalClusterControllers(ctx context.Conte
 	return s.registerController(&controllerWrapper{
 		Name: apisreplicatelogicalcluster.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -969,7 +971,7 @@ func (s *Server) installTenancyReplicateLogicalClusterControllers(ctx context.Co
 	return s.registerController(&controllerWrapper{
 		Name: tenancyreplicatelogicalcluster.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -992,7 +994,7 @@ func (s *Server) installCoreReplicateClusterRoleBindingControllers(ctx context.C
 	return s.registerController(&controllerWrapper{
 		Name: corereplicateclusterrolebinding.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1014,7 +1016,7 @@ func (s *Server) installTenancyReplicateClusterRoleControllers(ctx context.Conte
 	return s.registerController(&controllerWrapper{
 		Name: tenancyreplicateclusterrole.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1036,7 +1038,7 @@ func (s *Server) installTenancyReplicateClusterRoleBindingControllers(ctx contex
 	return s.registerController(&controllerWrapper{
 		Name: tenancyreplicateclusterrolebinding.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1065,7 +1067,7 @@ func (s *Server) installAPIExportEndpointSliceController(ctx context.Context, co
 	return s.registerController(&controllerWrapper{
 		Name: apiexportendpointslice.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1092,7 +1094,7 @@ func (s *Server) installPartitionSetController(ctx context.Context, config *rest
 	return s.registerController(&controllerWrapper{
 		Name: partitionset.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1116,7 +1118,7 @@ func (s *Server) installExtraAnnotationSyncController(ctx context.Context, confi
 	return s.registerController(&controllerWrapper{
 		Name: extraannotationsync.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1157,7 +1159,7 @@ func (s *Server) installKubeQuotaController(
 	if err := s.registerController(&controllerWrapper{
 		Name: kubequota.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	}); err != nil {
 		return err
@@ -1187,7 +1189,7 @@ func (s *Server) installApiExportIdentityController(ctx context.Context, config
 	return s.registerController(&controllerWrapper{
 		Name: identitycache.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 1)
+			c.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1202,7 +1204,7 @@ func (s *Server) installReplicationController(ctx context.Context, config *rest.
 	return s.registerController(&controllerWrapper{
 		Name: replication.ControllerName,
 		Runner: func(ctx context.Context) {
-			controller.Start(ctx, 2)
+			controller.Start(ctx, workerCount)
 		},
 	})
 }
@@ -1241,7 +1243,7 @@ func (s *Server) installGarbageCollectorController(ctx context.Context, config *
 	return s.registerController(&controllerWrapper{
 		Name: garbagecollector.ControllerName,
 		Runner: func(ctx context.Context) {
-			c.Start(ctx, 2)
+			c.Start(ctx, workerCount)
 		},
 	})
 }