diff --git a/checker/config.go b/checker/config.go
index 8c9675e78..2b875376e 100644
--- a/checker/config.go
+++ b/checker/config.go
@@ -18,6 +18,7 @@ type Config struct {
 	LogTriggersToLevel          map[string]string
 	MetricEventPopBatchSize     int64
 	MetricEventPopDelay         time.Duration
+	CriticalTimeOfCheck         time.Duration
 }
 
 // SourceCheckConfig represents check parameters for a single metric source
diff --git a/checker/worker/trigger_handler.go b/checker/worker/trigger_handler.go
index 817b6e23b..6faae40a3 100644
--- a/checker/worker/trigger_handler.go
+++ b/checker/worker/trigger_handler.go
@@ -62,6 +62,16 @@ func (manager *WorkerManager) handleTriggerInLock(triggerID string, metrics *met
 	defer metrics.TriggersCheckTime.UpdateSince(startedAt)
 
 	err = manager.checkTrigger(triggerID)
+
+	timeSince := time.Since(startedAt)
+	if timeSince > manager.Config.CriticalTimeOfCheck {
+		manager.Logger.Warning().
+			String("trigger_id", triggerID).
+			Error(err).
+			String("time_of_check", timeSince.String()).
+			Msg("It took too long to check trigger")
+	}
+
 	return err
 }
 
diff --git a/cmd/checker/config.go b/cmd/checker/config.go
index d05be0f71..f035e3f25 100644
--- a/cmd/checker/config.go
+++ b/cmd/checker/config.go
@@ -46,6 +46,8 @@ type checkerConfig struct {
 	MetricEventPopBatchSize int `yaml:"metric_event_pop_batch_size"`
 	// Metric event pop operation delay
 	MetricEventPopDelay string `yaml:"metric_event_pop_delay"`
+	// Duration of check that is considered critical and must be logged
+	CriticalTimeOfCheck string `yaml:"critical_time_of_check"`
 }
 
 func handleParallelChecks(parallelChecks *int) bool {
@@ -119,6 +121,7 @@ func (config *config) getSettings(logger moira.Logger) *checker.Config {
 		LogTriggersToLevel:          logTriggersToLevel,
 		MetricEventPopBatchSize:     int64(config.Checker.MetricEventPopBatchSize),
 		MetricEventPopDelay:         to.Duration(config.Checker.MetricEventPopDelay),
+		CriticalTimeOfCheck:         to.Duration(config.Checker.CriticalTimeOfCheck),
 	}
 }
 
@@ -138,6 +141,7 @@ func getDefault() config {
 			NoDataCheckInterval:       "60s",
 			LazyTriggersCheckInterval: "10m",
 			StopCheckingInterval:      "30s",
+			CriticalTimeOfCheck:       "1h",
 		},
 		Telemetry: cmd.TelemetryConfig{
 			Listen: ":8092",