diff --git a/apps/opm/serializers.py b/apps/opm/serializers.py
index 73fe75cd..b5c6ab9c 100644
--- a/apps/opm/serializers.py
+++ b/apps/opm/serializers.py
@@ -1,6 +1,6 @@
 from apps.hrm.models import Certificate
 from apps.opm.models import GasCheck, Operation, Opl, OplCate, OplCert, OplWorker
-from apps.system.serializers import DictSerializer, DictSimpleSerializer
+from apps.system.serializers import DictSerializer, DictSimpleSerializer, UserSimpleSerializer
 from apps.utils.serializers import CustomModelSerializer
 from apps.utils.constants import EXCLUDE_FIELDS
 from rest_framework import serializers
@@ -100,11 +100,18 @@ class OplWorkerUpdateSerializer(CustomModelSerializer):
         return oplw
 
 
-class OplWorkerSerializer():
+class OplWorkerSerializer(CustomModelSerializer):
+    worker_ = UserSimpleSerializer(source='worker', read_only=True)
+    certificates_ = serializers.SerializerMethodField()
+
     class Meta:
         model = OplWorker
         fields = '__all__'
 
+    def get_certificates_(self, obj):
+        cs = OplCert.objects.filter(opl_worker=obj)
+        return cs.values('certificate', 'name', 'type', 'number', 'issue_date', 'expiration_date', 'review_date', 'file')
+
 
 class GasCheckCreateUpdateSerializer(CustomModelSerializer):
     class Meta:
diff --git a/apps/opm/views.py b/apps/opm/views.py
index 2533ade2..46d87e1b 100644
--- a/apps/opm/views.py
+++ b/apps/opm/views.py
@@ -1,7 +1,7 @@
 from django.shortcuts import render
 from rest_framework.response import Response
 from apps.opm.models import GasCheck, Operation, Opl, OplCate, OplWorker
-from apps.opm.serializers import GasCheckCreateUpdateSerializer, GasCheckSerializer, OperationCreateUpdateSerializer, OperationSerializer, OplCateCreateUpdateSerializer, OplCateDetailSerializer, OplCateSerializer, OplCreateUpdateSerializer, OplSerializer, OplWorkerCreateSerializer, OplWorkerUpdateSerializer
+from apps.opm.serializers import GasCheckCreateUpdateSerializer, GasCheckSerializer, OperationCreateUpdateSerializer, OperationSerializer, OplCateCreateUpdateSerializer, OplCateDetailSerializer, OplCateSerializer, OplCreateUpdateSerializer, OplSerializer, OplWorkerCreateSerializer, OplWorkerSerializer, OplWorkerUpdateSerializer
 from apps.utils.viewsets import CustomGenericViewSet, CustomModelViewSet
 from rest_framework.exceptions import ParseError
 from rest_framework.mixins import CreateModelMixin, ListModelMixin, DestroyModelMixin
@@ -64,7 +64,7 @@ class OplWorkerViewSet(CustomModelViewSet):
     queryset = OplWorker.objects.all()
     create_serializer_class = OplWorkerCreateSerializer
     update_serializer_class = OplWorkerUpdateSerializer
-    serializer_class = OplSerializer
+    serializer_class = OplWorkerSerializer
 
     def destroy(self, request, *args, **kwargs):
         obj = self.get_object()