diff --git a/cluster-autoscaler/utils/drain/drain.go b/cluster-autoscaler/utils/drain/drain.go
index 81eef9ad858a..00f66e673fb5 100644
--- a/cluster-autoscaler/utils/drain/drain.go
+++ b/cluster-autoscaler/utils/drain/drain.go
@@ -17,6 +17,7 @@ limitations under the License.
 package drain
 
 import (
+	"fmt"
 	"strings"
 	"time"
 
@@ -68,6 +69,31 @@ const (
 	UnexpectedError
 )
 
+func (e BlockingPodReason) String() string {
+	switch e {
+	case NoReason:
+		return "NoReason"
+	case ControllerNotFound:
+		return "ControllerNotFound"
+	case MinReplicasReached:
+		return "MinReplicasReached"
+	case NotReplicated:
+		return "NotReplicated"
+	case LocalStorageRequested:
+		return "LocalStorageRequested"
+	case NotSafeToEvictAnnotation:
+		return "NotSafeToEvictAnnotation"
+	case UnmovableKubeSystemPod:
+		return "UnmovableKubeSystemPod"
+	case NotEnoughPdb:
+		return "NotEnoughPdb"
+	case UnexpectedError:
+		return "UnexpectedError"
+	default:
+		return fmt.Sprintf("unrecognized reason: %d", int(e))
+	}
+}
+
 // ControllerRef returns the OwnerReference to pod's controller.
 func ControllerRef(pod *apiv1.Pod) *metav1.OwnerReference {
 	return metav1.GetControllerOf(pod)
diff --git a/cluster-autoscaler/utils/drain/drain_test.go b/cluster-autoscaler/utils/drain/drain_test.go
index 95176fdf55d0..ba65b3a8f38c 100644
--- a/cluster-autoscaler/utils/drain/drain_test.go
+++ b/cluster-autoscaler/utils/drain/drain_test.go
@@ -17,6 +17,7 @@ limitations under the License.
 package drain
 
 import (
+	"fmt"
 	"testing"
 	"time"
 
@@ -128,3 +129,57 @@ func TestIsPodLongTerminating(t *testing.T) {
 		})
 	}
 }
+
+func TestBlockingPodReasonFormatting(t *testing.T) {
+	for _, tc := range []struct {
+		bpr  BlockingPodReason
+		want string
+	}{
+		{
+			bpr:  NoReason,
+			want: "NoReason",
+		},
+		{
+			bpr:  ControllerNotFound,
+			want: "ControllerNotFound",
+		},
+		{
+			bpr:  ControllerNotFound,
+			want: "ControllerNotFound",
+		},
+		{
+			bpr:  NotReplicated,
+			want: "NotReplicated",
+		},
+		{
+			bpr:  LocalStorageRequested,
+			want: "LocalStorageRequested",
+		},
+		{
+			bpr:  NotSafeToEvictAnnotation,
+			want: "NotSafeToEvictAnnotation",
+		},
+		{
+			bpr:  UnmovableKubeSystemPod,
+			want: "UnmovableKubeSystemPod",
+		},
+		{
+			bpr:  NotEnoughPdb,
+			want: "NotEnoughPdb",
+		},
+		{
+			bpr:  UnexpectedError,
+			want: "UnexpectedError",
+		},
+		{
+			bpr:  BlockingPodReason(9),
+			want: "unrecognized reason: 9",
+		},
+	} {
+		t.Run(tc.want, func(t *testing.T) {
+			if got := fmt.Sprintf("%v", tc.bpr); got != tc.want {
+				t.Errorf("got: %s, want %s", got, tc.want)
+			}
+		})
+	}
+}