diff --git a/cmdutils/switches/switches_test.go b/cmdutils/switches/switches_test.go
index 2ade244..73d75cc 100644
--- a/cmdutils/switches/switches_test.go
+++ b/cmdutils/switches/switches_test.go
@@ -4,7 +4,7 @@
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
-//      http://www.apache.org/licenses/LICENSE-2.0
+//	http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
diff --git a/configutils/configutils.go b/configutils/configutils.go
index 0b07c8a..fd0ad22 100644
--- a/configutils/configutils.go
+++ b/configutils/configutils.go
@@ -112,7 +112,7 @@ func getKubeconfigFlag() string {
 // It also applies saner defaults for QPS and burst based on the Kubernetes
 // controller manager defaults (20 QPS, 30 burst)
 //
-// Config precedence
+// # Config precedence
 //
 // * Kubeconfig / --kubeconfig value / flag pointing at a file
 //
diff --git a/metautils/metautils.go b/metautils/metautils.go
index b2bcc26..2c5e082 100644
--- a/metautils/metautils.go
+++ b/metautils/metautils.go
@@ -353,6 +353,12 @@ func FilterList(list client.ObjectList, f func(obj client.Object) bool) error {
 	return SetList(list, filtered)
 }
 
+// HasLabel checks if the object has a label with the given key.
+func HasLabel(obj metav1.Object, key string) bool {
+	_, ok := obj.GetLabels()[key]
+	return ok
+}
+
 // SetLabel sets the given label on the object.
 func SetLabel(obj metav1.Object, key, value string) {
 	labels := obj.GetLabels()
@@ -368,15 +374,40 @@ func SetLabel(obj metav1.Object, key, value string) {
 func SetLabels(obj metav1.Object, set map[string]string) {
 	labels := obj.GetLabels()
 	if labels == nil {
-		labels = make(map[string]string)
+		labels = set
+	} else {
+		for k, v := range set {
+			labels[k] = v
+		}
 	}
+	obj.SetLabels(labels)
+}
 
-	for k, v := range set {
-		labels[k] = v
+// DeleteLabel deletes the label with the given key from the object.
+func DeleteLabel(obj metav1.Object, key string) {
+	labels := obj.GetLabels()
+	delete(labels, key)
+	obj.SetLabels(labels)
+}
+
+// DeleteLabels deletes the labels with the given keys from the object.
+func DeleteLabels(obj metav1.Object, keys []string) {
+	labels := obj.GetLabels()
+	if len(labels) == 0 {
+		return
+	}
+	for _, key := range keys {
+		delete(labels, key)
 	}
 	obj.SetLabels(labels)
 }
 
+// HasAnnotation checks if the object has an annotation with the given key.
+func HasAnnotation(obj metav1.Object, key string) bool {
+	_, ok := obj.GetAnnotations()[key]
+	return ok
+}
+
 // SetAnnotation sets the given annotation on the object.
 func SetAnnotation(obj metav1.Object, key, value string) {
 	annotations := obj.GetAnnotations()
@@ -392,11 +423,30 @@ func SetAnnotation(obj metav1.Object, key, value string) {
 func SetAnnotations(obj metav1.Object, set map[string]string) {
 	annotations := obj.GetAnnotations()
 	if annotations == nil {
-		annotations = make(map[string]string)
+		annotations = set
+	} else {
+		for k, v := range set {
+			annotations[k] = v
+		}
 	}
+	obj.SetAnnotations(annotations)
+}
 
-	for k, v := range set {
-		annotations[k] = v
+// DeleteAnnotation deletes the annotation with the given key from the object.
+func DeleteAnnotation(obj metav1.Object, key string) {
+	annotations := obj.GetAnnotations()
+	delete(annotations, key)
+	obj.SetAnnotations(annotations)
+}
+
+// DeleteAnnotations deletes the annotations with the given keys from the object.
+func DeleteAnnotations(obj metav1.Object, keys []string) {
+	annotations := obj.GetAnnotations()
+	if len(annotations) == 0 {
+		return
+	}
+	for _, key := range keys {
+		delete(annotations, key)
 	}
 	obj.SetAnnotations(annotations)
 }
diff --git a/metautils/metautils_test.go b/metautils/metautils_test.go
index dea09b2..12b6b2c 100644
--- a/metautils/metautils_test.go
+++ b/metautils/metautils_test.go
@@ -511,6 +511,16 @@ var _ = Describe("Metautils", func() {
 		})
 	})
 
+	DescribeTable("HasLabel",
+		func(initLabels map[string]string, key string, expected bool) {
+			obj := &metav1.ObjectMeta{Labels: initLabels}
+			Expect(HasLabel(obj, key)).To(Equal(expected))
+		},
+		Entry("label present", map[string]string{"foo": ""}, "foo", true),
+		Entry("nil labels", nil, "foo", false),
+		Entry("different label present", map[string]string{"bar": ""}, "foo", false),
+	)
+
 	DescribeTable("SetLabel",
 		func(initLabels map[string]string, key, value string, expected map[string]string) {
 			obj := &metav1.ObjectMeta{Labels: initLabels}
@@ -534,6 +544,39 @@ var _ = Describe("Metautils", func() {
 		Entry("partial other keys, same key", map[string]string{"foo": "baz", "bar": "baz"}, map[string]string{"foo": "bar"}, map[string]string{"foo": "bar", "bar": "baz"}),
 	)
 
+	DescribeTable("DeleteLabel",
+		func(initLabels map[string]string, key string, expected map[string]string) {
+			obj := &metav1.ObjectMeta{Labels: initLabels}
+			DeleteLabel(obj, key)
+			Expect(obj.Labels).To(Equal(expected))
+		},
+		Entry("key present", map[string]string{"foo": "bar"}, "foo", map[string]string{}),
+		Entry("different key present", map[string]string{"bar": "baz"}, "foo", map[string]string{"bar": "baz"}),
+		Entry("nil map", nil, "foo", nil),
+	)
+
+	DescribeTable("DeleteLabels",
+		func(initLabels map[string]string, keys []string, expected map[string]string) {
+			obj := &metav1.ObjectMeta{Labels: initLabels}
+			DeleteLabels(obj, keys)
+			Expect(obj.Labels).To(Equal(expected))
+		},
+		Entry("keys present", map[string]string{"foo": "bar", "bar": "baz"}, []string{"foo", "bar"}, map[string]string{}),
+		Entry("some keys present", map[string]string{"foo": "bar", "bar": "baz"}, []string{"foo"}, map[string]string{"bar": "baz"}),
+		Entry("no keys present", map[string]string{"foo": "bar", "bar": "baz"}, []string{"qux"}, map[string]string{"foo": "bar", "bar": "baz"}),
+		Entry("nil map", nil, []string{"foo", "bar"}, nil),
+	)
+
+	DescribeTable("HasAnnotation",
+		func(initAnnotations map[string]string, key string, expected bool) {
+			obj := &metav1.ObjectMeta{Annotations: initAnnotations}
+			Expect(HasAnnotation(obj, key)).To(Equal(expected))
+		},
+		Entry("annotation present", map[string]string{"foo": ""}, "foo", true),
+		Entry("nil annotations", nil, "foo", false),
+		Entry("different annotation present", map[string]string{"bar": ""}, "foo", false),
+	)
+
 	DescribeTable("SetAnnotation",
 		func(initAnnotations map[string]string, key, value string, expected map[string]string) {
 			obj := &metav1.ObjectMeta{Annotations: initAnnotations}
@@ -557,6 +600,29 @@ var _ = Describe("Metautils", func() {
 		Entry("partial other keys, same key", map[string]string{"foo": "baz", "bar": "baz"}, map[string]string{"foo": "bar"}, map[string]string{"foo": "bar", "bar": "baz"}),
 	)
 
+	DescribeTable("DeleteAnnotation",
+		func(initAnnotations map[string]string, key string, expected map[string]string) {
+			obj := &metav1.ObjectMeta{Annotations: initAnnotations}
+			DeleteAnnotation(obj, key)
+			Expect(obj.Annotations).To(Equal(expected))
+		},
+		Entry("key present", map[string]string{"foo": "bar"}, "foo", map[string]string{}),
+		Entry("different key present", map[string]string{"bar": "baz"}, "foo", map[string]string{"bar": "baz"}),
+		Entry("nil map", nil, "foo", nil),
+	)
+
+	DescribeTable("DeleteAnnotations",
+		func(initAnnotations map[string]string, keys []string, expected map[string]string) {
+			obj := &metav1.ObjectMeta{Annotations: initAnnotations}
+			DeleteAnnotations(obj, keys)
+			Expect(obj.Annotations).To(Equal(expected))
+		},
+		Entry("keys present", map[string]string{"foo": "bar", "bar": "baz"}, []string{"foo", "bar"}, map[string]string{}),
+		Entry("some keys present", map[string]string{"foo": "bar", "bar": "baz"}, []string{"foo"}, map[string]string{"bar": "baz"}),
+		Entry("no keys present", map[string]string{"foo": "bar", "bar": "baz"}, []string{"qux"}, map[string]string{"foo": "bar", "bar": "baz"}),
+		Entry("nil map", nil, []string{"foo", "bar"}, nil),
+	)
+
 	Describe("FilterList", func() {
 		It("should filter the list with the given function", func() {
 			list := &corev1.SecretList{
diff --git a/mock/controller-runtime/client/doc.go b/mock/controller-runtime/client/doc.go
index f23801d..15d20e0 100644
--- a/mock/controller-runtime/client/doc.go
+++ b/mock/controller-runtime/client/doc.go
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 // Package client contains mocks for controller-runtime's client package.
+//
 //go:generate go run github.com/golang/mock/mockgen -copyright_file ../../../hack/boilerplate.go.txt -package client -destination mocks.go sigs.k8s.io/controller-runtime/pkg/client Client,FieldIndexer
 //go:generate go run github.com/golang/mock/mockgen -copyright_file ../../../hack/boilerplate.go.txt -package client -destination funcs.go github.com/onmetal/controller-utils/mock/controller-runtime/client IndexerFunc
 package client
diff --git a/mock/controller-utils/clientutils/doc.go b/mock/controller-utils/clientutils/doc.go
index baf1641..4654195 100644
--- a/mock/controller-utils/clientutils/doc.go
+++ b/mock/controller-utils/clientutils/doc.go
@@ -13,5 +13,6 @@
 // limitations under the License.
 
 // Package clientutils contains mocks for the actual clientutils package.
+//
 //go:generate go run github.com/golang/mock/mockgen -copyright_file ../../../hack/boilerplate.go.txt -package clientutils -destination=mocks.go github.com/onmetal/controller-utils/clientutils PatchProvider
 package clientutils