diff --git a/app/javascript/components/user-activity-counts.vue b/app/javascript/components/user-activity-counts.vue
index a17612733e3..bb4ed9c9445 100644
--- a/app/javascript/components/user-activity-counts.vue
+++ b/app/javascript/components/user-activity-counts.vue
@@ -21,6 +21,10 @@
       activity-name='回答',
       :activity-count='user.answer_count',
       :activity-url='`${user.url}/answers`')
+    user-activity-count(
+      activity-name='ポートフォリオ',
+      :activity-count='user.work_count',
+      :activity-url='`${user.url}/portfolio`')
 </template>
 <script>
 import UserActivityCount from './user-activity-count.vue'
diff --git a/app/views/api/users/_list_user.json.jbuilder b/app/views/api/users/_list_user.json.jbuilder
index 88d5ba5e72d..e582d02c699 100644
--- a/app/views/api/users/_list_user.json.jbuilder
+++ b/app/views/api/users/_list_user.json.jbuilder
@@ -20,6 +20,7 @@ if user.student_or_trainee?
   json.product_count user.products.size
   json.question_count user.questions.size
   json.answer_count user.answers.size
+  json.work_count user.works.size
 end
 
 
diff --git a/app/views/users/_activity_counts.html.slim b/app/views/users/_activity_counts.html.slim
index 007c1b7ab6c..7f95326824b 100644
--- a/app/views/users/_activity_counts.html.slim
+++ b/app/views/users/_activity_counts.html.slim
@@ -4,28 +4,40 @@ dl.card-counts__items
       dt.card-counts__item-label
         | 日報
       dd.card-counts__item-value
-        = link_to user.reports.count, user_reports_path(user)
+        = link_to_if !user.reports.empty?,
+            user.reports.size, user_reports_path(user)
   .card-counts__item
     .card-counts__item-inner
       dt.card-counts__item-label
         | 提出物
       dd.card-counts__item-value
-        = link_to user.products.count, user_products_path(user)
+        = link_to_if !user.products.empty?,
+            user.products.size, user_products_path(user)
   .card-counts__item
     .card-counts__item-inner
       dt.card-counts__item-label
         | コメント
       dd.card-counts__item-value
-        = link_to user.comments.count, user_comments_path(user)
+        = link_to_if !user.comments.empty?,
+            user.comments.size, user_comments_path(user)
   .card-counts__item
     .card-counts__item-inner
       dt.card-counts__item-label
         | 質問
       dd.card-counts__item-value
-        = link_to user.questions.count, user_questions_path(user)
+        = link_to_if !user.questions.empty?,
+            user.questions.size, user_questions_path(user)
   .card-counts__item
     .card-counts__item-inner
       dt.card-counts__item-label
         | 回答
       dd.card-counts__item-value
-        = link_to user.answers.count, user_answers_path(user)
+        = link_to_if !user.answers.empty?,
+            user.answers.size, user_answers_path(user)
+  .card-counts__item
+    .card-counts__item-inner
+      dt.card-counts__item-label
+        | ポートフォリオ
+      dd.card-counts__item-value
+        = link_to_if !user.works.empty?,
+            user.works.size, user_portfolio_path(user)