diff --git a/core/api/src/main/java/org/onosproject/store/service/Task.java b/core/api/src/main/java/org/onosproject/store/service/Task.java
new file mode 100644
index 0000000..a8ff07b
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/store/service/Task.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.store.service;
+
+import java.util.function.Function;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * {@link WorkQueue} task.
+ *
+ * @param <E> task payload type.
+ */
+public class Task<E> {
+    private final E payload;
+    private final String taskId;
+
+    private Task() {
+        payload = null;
+        taskId = null;
+    }
+
+    /**
+     * Constructs a new task instance.
+     * @param taskId task identifier
+     * @param payload task payload
+     */
+    public Task(String taskId, E payload) {
+        this.taskId = taskId;
+        this.payload = payload;
+    }
+
+    /**
+     * Returns the task identifier.
+     * @return task id
+     */
+    public String taskId() {
+        return taskId;
+    }
+
+    /**
+     * Returns the task payload.
+     * @return task payload
+     */
+    public E payload() {
+        return payload;
+    }
+
+    /**
+     * Maps task from one payload type to another.
+     * @param mapper type mapper.
+     * @return mapped task.
+     */
+    public <F> Task<F> map(Function<E, F> mapper) {
+        return new Task<>(taskId, mapper.apply(payload));
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("taskId", taskId)
+                .add("payload", payload)
+                .toString();
+    }
+}