diff --git a/cmd/worker/main.go b/cmd/worker/main.go
index 4bf177b..1041196 100644
--- a/cmd/worker/main.go
+++ b/cmd/worker/main.go
@@ -4,21 +4,69 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"strconv"
+	"strings"
+	"time"
 
 	"go.opentelemetry.io/otel"
+	"go.temporal.io/api/workflowservice/v1"
 	"go.temporal.io/sdk/client"
 	"go.temporal.io/sdk/worker"
 
-	custom_otel "github.com/instill-ai/mgmt-backend/pkg/logger/otel"
 	"github.com/instill-ai/x/temporal"
 	"github.com/instill-ai/x/zapadapter"
 
 	"github.com/instill-ai/mgmt-backend/config"
 	"github.com/instill-ai/mgmt-backend/pkg/logger"
 
+	custom_otel "github.com/instill-ai/mgmt-backend/pkg/logger/otel"
 	mgmtWorker "github.com/instill-ai/mgmt-backend/pkg/worker"
 )
 
+const namespace = "mgmt-backend"
+
+func initTemporalNamespace(ctx context.Context, client client.Client) {
+	logger, _ := logger.GetZapLogger(ctx)
+
+	resp, err := client.WorkflowService().ListNamespaces(ctx, &workflowservice.ListNamespacesRequest{})
+	if err != nil {
+		logger.Fatal(fmt.Sprintf("Unable to list namespaces: %s", err))
+	}
+
+	found := false
+	for _, n := range resp.GetNamespaces() {
+		if n.NamespaceInfo.Name == namespace {
+			found = true
+		}
+	}
+
+	if !found {
+		if _, err := client.WorkflowService().RegisterNamespace(ctx,
+			&workflowservice.RegisterNamespaceRequest{
+				Namespace: namespace,
+				WorkflowExecutionRetentionPeriod: func() *time.Duration {
+					// Check if the string ends with "d" for day.
+					s := config.Config.Temporal.Retention
+					if strings.HasSuffix(s, "d") {
+						// Parse the number of days.
+						days, err := strconv.Atoi(s[:len(s)-1])
+						if err != nil {
+							logger.Fatal(fmt.Sprintf("Unable to parse retention period in day: %s", err))
+						}
+						// Convert days to hours and then to a duration.
+						t := time.Hour * 24 * time.Duration(days)
+						return &t
+					}
+					logger.Fatal(fmt.Sprintf("Unable to parse retention period in day: %s", err))
+					return nil
+				}(),
+			},
+		); err != nil {
+			logger.Fatal(fmt.Sprintf("Unable to register namespace: %s", err))
+		}
+	}
+}
+
 func main() {
 
 	if err := config.Init(); err != nil {
@@ -78,6 +126,8 @@ func main() {
 	}
 	defer temporalClient.Close()
 
+	initTemporalNamespace(ctx, temporalClient)
+
 	w := worker.New(temporalClient, mgmtWorker.TaskQueue, worker.Options{
 		MaxConcurrentActivityExecutionSize: 2,
 	})
diff --git a/config/config.go b/config/config.go
index 39f8c9d..6c83b28 100644
--- a/config/config.go
+++ b/config/config.go
@@ -52,6 +52,7 @@ type ServerConfig struct {
 type TemporalConfig struct {
 	HostPort   string `koanf:"hostport"`
 	Namespace  string `koanf:"namespace"`
+	Retention  string `koanf:"retention"`
 	Ca         string `koanf:"ca"`
 	Cert       string `koanf:"cert"`
 	Key        string `koanf:"key"`
diff --git a/config/config.yaml b/config/config.yaml
index 3c8e300..6591922 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -54,6 +54,7 @@ openfga:
 temporal:
   hostport: temporal:7233
   namespace: mgmt-backend
+  retention: 1d
   ca:
   cert:
   key:
diff --git a/go.mod b/go.mod
index 6f617c9..457a592 100644
--- a/go.mod
+++ b/go.mod
@@ -32,6 +32,7 @@ require (
 	go.opentelemetry.io/otel/sdk v1.16.0
 	go.opentelemetry.io/otel/sdk/metric v0.39.0
 	go.opentelemetry.io/otel/trace v1.16.0
+	go.temporal.io/api v1.16.0
 	go.temporal.io/sdk v1.21.0
 	go.uber.org/zap v1.24.0
 	golang.org/x/crypto v0.14.0
@@ -106,7 +107,6 @@ require (
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0 // indirect
 	go.opentelemetry.io/otel/metric v1.16.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
-	go.temporal.io/api v1.16.0 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.9.0 // indirect
 	golang.org/x/mod v0.8.0 // indirect