diff --git a/pkg/apis/autoscaling/v1alpha1/clusterautoscaler_types.go b/pkg/apis/autoscaling/v1alpha1/clusterautoscaler_types.go
index 08ccbd51f..633859e5d 100644
--- a/pkg/apis/autoscaling/v1alpha1/clusterautoscaler_types.go
+++ b/pkg/apis/autoscaling/v1alpha1/clusterautoscaler_types.go
@@ -64,4 +64,5 @@ type ScaleDownConfig struct {
 	DelayAfterAdd     string `json:"delayAfterAdd"`
 	DelayAfterDelete  string `json:"delayAfterDelete"`
 	DelayAfterFailure string `json:"delayAfterFailure"`
+	UnneededTime      string `json:"unneededTime,omitempty"`
 }
diff --git a/pkg/controller/clusterautoscaler/clusterautoscaler.go b/pkg/controller/clusterautoscaler/clusterautoscaler.go
index 193ec6e98..293742187 100644
--- a/pkg/controller/clusterautoscaler/clusterautoscaler.go
+++ b/pkg/controller/clusterautoscaler/clusterautoscaler.go
@@ -42,6 +42,7 @@ const (
 	ScaleDownDelayAfterAddArg       AutoscalerArg = "--scale-down-delay-after-add"
 	ScaleDownDelayAfterDeleteArg    AutoscalerArg = "--scale-down-delay-after-delete"
 	ScaleDownDelayAfterFailureArg   AutoscalerArg = "--scale-down-delay-after-failure"
+	ScaleDownUnneededTimeArg        AutoscalerArg = "--scale-down-unneeded-time"
 	MaxNodesTotalArg                AutoscalerArg = "--max-nodes-total"
 	CoresTotalArg                   AutoscalerArg = "--cores-total"
 	MemoryTotalArg                  AutoscalerArg = "--memory-total"
@@ -96,6 +97,10 @@ func ScaleDownArgs(sd *v1alpha1.ScaleDownConfig) []string {
 		ScaleDownDelayAfterFailureArg.Value(sd.DelayAfterFailure),
 	}
 
+	if sd.UnneededTime != "" {
+		args = append(args, ScaleDownUnneededTimeArg.Value(sd.UnneededTime))
+	}
+
 	return args
 }