diff --git a/internal/service/applied_sla_service.go b/internal/service/applied_sla_service.go
index e25f6c5e..3ba39e18 100644
--- a/internal/service/applied_sla_service.go
+++ b/internal/service/applied_sla_service.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"sort"
 	"time"
 
 	"github.com/gochat/gochat/internal/model"
@@ -316,6 +317,7 @@ func (s *AppliedSlaService) handleMissedSla(ctx context.Context, applied *model.
 		applogger.L().Errorf("Failed to create SLA event for applied_sla %d: %v", applied.ID, err)
 		return
 	}
+	s.createSlaMissNotifications(ctx, event, eventType, conversation)
 
 	// Update AppliedSLA status: active → active_with_misses (if not already)
 	// Chatwoot: sla_status transitions: active → active_with_misses → missed/hit
@@ -326,6 +328,105 @@ func (s *AppliedSlaService) handleMissedSla(ctx context.Context, applied *model.
 	applogger.L().Infof("SLA %s missed for applied_sla %d on conversation %d", eventType, applied.ID, applied.ConversationID)
 }
 
+func (s *AppliedSlaService) createSlaMissNotifications(ctx context.Context, event *model.SlaEvent, eventType model.SLAEventType, conversation *model.Conversation) {
+	if s.conversationRepo == nil || event == nil || conversation == nil {
+		return
+	}
+	notificationType := slaMissNotificationType(eventType)
+	if notificationType == "" {
+		return
+	}
+
+	userIDs, err := s.slaNotificationUserIDs(ctx, conversation)
+	if err != nil {
+		applogger.L().Errorf("Failed to resolve SLA notification users for event %d: %v", event.ID, err)
+		return
+	}
+	accountID := event.AccountID
+	for _, userID := range userIDs {
+		notification := &model.Notification{
+			AccountID:          &accountID,
+			UserID:             userID,
+			NotificationType:   notificationType,
+			PrimaryActorType:   "Conversation",
+			PrimaryActorID:     conversation.ID,
+			SecondaryActorType: "SlaPolicy",
+			SecondaryActorID:   event.SlaPolicyID,
+		}
+		if err := s.conversationRepo.DB().WithContext(ctx).Create(notification).Error; err != nil {
+			applogger.L().Errorf("Failed to create SLA notification for event %d user %d: %v", event.ID, userID, err)
+		}
+	}
+}
+
+func slaMissNotificationType(eventType model.SLAEventType) string {
+	switch eventType {
+	case model.SLAEventFRT:
+		return "sla_missed_first_response"
+	case model.SLAEventNRT:
+		return "sla_missed_next_response"
+	case model.SLAEventRT:
+		return "sla_missed_resolution"
+	default:
+		return ""
+	}
+}
+
+func (s *AppliedSlaService) slaNotificationUserIDs(ctx context.Context, conversation *model.Conversation) ([]uint, error) {
+	seen := map[uint]struct{}{}
+	add := func(userID uint) {
+		if userID == 0 {
+			return
+		}
+		seen[userID] = struct{}{}
+	}
+
+	var participants []model.ConversationParticipant
+	if err := s.conversationRepo.DB().WithContext(ctx).
+		Where("account_id = ? AND conversation_id = ?", conversation.AccountID, conversation.ID).
+		Find(&participants).Error; err != nil {
+		return nil, err
+	}
+	for _, participant := range participants {
+		add(participant.UserID)
+	}
+
+	var admins []model.AccountUser
+	if err := s.conversationRepo.DB().WithContext(ctx).
+		Where("account_id = ? AND role = ?", conversation.AccountID, "administrator").
+		Find(&admins).Error; err != nil {
+		return nil, err
+	}
+	for _, admin := range admins {
+		add(admin.UserID)
+	}
+
+	if conversation.AssigneeID != nil {
+		add(*conversation.AssigneeID)
+	}
+
+	ids := make([]uint, 0, len(seen))
+	for userID := range seen {
+		ids = append(ids, userID)
+	}
+	if len(ids) == 0 {
+		return ids, nil
+	}
+
+	var accessible []model.AccountUser
+	if err := s.conversationRepo.DB().WithContext(ctx).
+		Where("account_id = ? AND user_id IN ?", conversation.AccountID, ids).
+		Find(&accessible).Error; err != nil {
+		return nil, err
+	}
+	ids = ids[:0]
+	for _, accountUser := range accessible {
+		ids = append(ids, accountUser.UserID)
+	}
+	sort.Slice(ids, func(i, j int) bool { return ids[i] < ids[j] })
+	return ids, nil
+}
+
 func (s *AppliedSlaService) slaEventMeta(ctx context.Context, eventType model.SLAEventType, conversation *model.Conversation) datatypes.JSON {
 	if eventType != model.SLAEventNRT {
 		return datatypes.JSON([]byte("{}"))
diff --git a/internal/service/applied_sla_service_test.go b/internal/service/applied_sla_service_test.go
index fde9e3eb..ad00c1b7 100644
--- a/internal/service/applied_sla_service_test.go
+++ b/internal/service/applied_sla_service_test.go
@@ -22,13 +22,17 @@ func setupAppliedSlaLifecycleTest(t *testing.T) (*AppliedSlaService, *gorm.DB) {
 	require.NoError(t, err)
 	require.NoError(t, db.AutoMigrate(
 		&model.Account{},
+		&model.User{},
+		&model.AccountUser{},
 		&model.Inbox{},
 		&model.Contact{},
 		&model.Conversation{},
+		&model.ConversationParticipant{},
 		&model.Message{},
 		&model.SlaPolicy{},
 		&model.AppliedSLA{},
 		&model.SlaEvent{},
+		&model.Notification{},
 	))
 	t.Cleanup(func() {
 		sqlDB, _ := db.DB()
@@ -98,6 +102,117 @@ func TestAppliedSlaService_Evaluate_FRTMissIsIdempotent(t *testing.T) {
 	assert.JSONEq(t, `{}`, string(events[0].Meta))
 }
 
+func TestAppliedSlaService_Evaluate_CreatesSlaMissNotifications(t *testing.T) {
+	svc, db := setupAppliedSlaLifecycleTest(t)
+	createdAt := time.Now().Add(-2 * time.Hour)
+	account, _, _, policy, conversation := seedAppliedSlaConversation(t, db, createdAt, model.SlaPolicy{
+		FirstResponseTimeThreshold: 60,
+	})
+
+	participant := &model.User{AccountID: account.ID, Name: "Participant", Email: "participant@example.com", Role: "agent", Active: true}
+	admin := &model.User{AccountID: account.ID, Name: "Admin", Email: "admin@example.com", Role: "administrator", Active: true}
+	assignee := &model.User{AccountID: account.ID, Name: "Assignee", Email: "assignee@example.com", Role: "agent", Active: true}
+	removedParticipant := &model.User{AccountID: account.ID, Name: "Removed", Email: "removed@example.com", Role: "agent", Active: true}
+	require.NoError(t, db.Create(participant).Error)
+	require.NoError(t, db.Create(admin).Error)
+	require.NoError(t, db.Create(assignee).Error)
+	require.NoError(t, db.Create(removedParticipant).Error)
+	require.NoError(t, db.Create(&model.AccountUser{AccountID: account.ID, UserID: participant.ID, Role: "agent"}).Error)
+	require.NoError(t, db.Create(&model.AccountUser{AccountID: account.ID, UserID: admin.ID, Role: "administrator"}).Error)
+	require.NoError(t, db.Create(&model.AccountUser{AccountID: account.ID, UserID: assignee.ID, Role: "agent"}).Error)
+	require.NoError(t, db.Create(&model.ConversationParticipant{AccountID: account.ID, ConversationID: conversation.ID, UserID: participant.ID}).Error)
+	require.NoError(t, db.Create(&model.ConversationParticipant{AccountID: account.ID, ConversationID: conversation.ID, UserID: admin.ID}).Error)
+	require.NoError(t, db.Create(&model.ConversationParticipant{AccountID: account.ID, ConversationID: conversation.ID, UserID: removedParticipant.ID}).Error)
+	require.NoError(t, db.Model(conversation).Update("assignee_id", assignee.ID).Error)
+	conversation.AssigneeID = &assignee.ID
+
+	applied, err := svc.CreateFromConversation(context.Background(), account.ID, conversation.ID, policy.ID)
+	require.NoError(t, err)
+
+	_, err = svc.Evaluate(context.Background(), applied.ID)
+	require.NoError(t, err)
+	_, err = svc.Evaluate(context.Background(), applied.ID)
+	require.NoError(t, err)
+
+	var notifications []model.Notification
+	require.NoError(t, db.Order("user_id ASC").Find(&notifications).Error)
+	require.Len(t, notifications, 3)
+	assert.Equal(t, []uint{participant.ID, admin.ID, assignee.ID}, []uint{notifications[0].UserID, notifications[1].UserID, notifications[2].UserID})
+	for _, notification := range notifications {
+		assert.Equal(t, "sla_missed_first_response", notification.NotificationType)
+		assert.Equal(t, "Conversation", notification.PrimaryActorType)
+		assert.Equal(t, conversation.ID, notification.PrimaryActorID)
+		assert.Equal(t, "SlaPolicy", notification.SecondaryActorType)
+		assert.Equal(t, policy.ID, notification.SecondaryActorID)
+		require.NotNil(t, notification.AccountID)
+		assert.Equal(t, account.ID, *notification.AccountID)
+	}
+}
+
+func TestAppliedSlaService_Evaluate_SlaNotificationTypes(t *testing.T) {
+	for _, tc := range []struct {
+		name              string
+		policy            model.SlaPolicy
+		conversationPatch func(*testing.T, *gorm.DB, *model.Conversation)
+		expectedType      string
+	}{
+		{
+			name:   "next response",
+			policy: model.SlaPolicy{NextResponseTimeThreshold: 60},
+			conversationPatch: func(t *testing.T, db *gorm.DB, conversation *model.Conversation) {
+				firstReply := time.Now().Add(-90 * time.Minute).Unix()
+				waitingSince := time.Now().Add(-10 * time.Minute).Unix()
+				require.NoError(t, db.Model(conversation).Updates(map[string]any{"first_reply_created_at": firstReply, "waiting_since": waitingSince}).Error)
+			},
+			expectedType: "sla_missed_next_response",
+		},
+		{
+			name:   "resolution",
+			policy: model.SlaPolicy{ResolutionTimeThreshold: 60},
+			conversationPatch: func(t *testing.T, db *gorm.DB, conversation *model.Conversation) {
+			},
+			expectedType: "sla_missed_resolution",
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			svc, db := setupAppliedSlaLifecycleTest(t)
+			createdAt := time.Now().Add(-2 * time.Hour)
+			account, _, _, policy, conversation := seedAppliedSlaConversation(t, db, createdAt, tc.policy)
+			user := &model.User{AccountID: account.ID, Name: "Watcher", Email: tc.name + "@example.com", Role: "agent", Active: true}
+			require.NoError(t, db.Create(user).Error)
+			require.NoError(t, db.Create(&model.AccountUser{AccountID: account.ID, UserID: user.ID, Role: "agent"}).Error)
+			require.NoError(t, db.Create(&model.ConversationParticipant{AccountID: account.ID, ConversationID: conversation.ID, UserID: user.ID}).Error)
+			tc.conversationPatch(t, db, conversation)
+
+			applied, err := svc.CreateFromConversation(context.Background(), account.ID, conversation.ID, policy.ID)
+			require.NoError(t, err)
+			_, err = svc.Evaluate(context.Background(), applied.ID)
+			require.NoError(t, err)
+
+			var notification model.Notification
+			require.NoError(t, db.First(&notification).Error)
+			assert.Equal(t, tc.expectedType, notification.NotificationType)
+		})
+	}
+}
+
+func TestAppliedSlaService_CreateFromConversation_OnlyDuringBusinessHoursMatchesReferenceTiming(t *testing.T) {
+	svc, db := setupAppliedSlaLifecycleTest(t)
+	createdAt := time.Date(2026, 6, 5, 20, 0, 0, 0, time.UTC)
+	account, _, _, policy, conversation := seedAppliedSlaConversation(t, db, createdAt, model.SlaPolicy{
+		FirstResponseTimeThreshold: 3600,
+		OnlyDuringBusinessHours:    true,
+	})
+
+	applied, err := svc.CreateFromConversation(context.Background(), account.ID, conversation.ID, policy.ID)
+	require.NoError(t, err)
+	require.NotNil(t, applied.FRTTargetAt)
+
+	// The current reference/chatwoot EvaluateAppliedSlaService stores the flag but
+	// calculates thresholds as created_at + threshold seconds.
+	assert.Equal(t, createdAt.Add(time.Hour), *applied.FRTTargetAt)
+}
+
 func TestAppliedSlaService_Evaluate_NRTMissStoresMessageMetaOnce(t *testing.T) {
 	svc, db := setupAppliedSlaLifecycleTest(t)
 	createdAt := time.Now().Add(-2 * time.Hour)