diff --git a/src/Task.php b/src/Task.php
index a52079b..2a29549 100644
--- a/src/Task.php
+++ b/src/Task.php
@@ -9,6 +9,11 @@ use JMS\Serializer\Annotation as JMS;
  */
 class Task
 {
+    const STATUS_PENDING = 'pending';
+    const STATUS_COMPLETED = 'completed';
+    const STATUS_DELETED = 'deleted';
+    const STATUS_WAITING = 'waiting';
+
     /**
      * @var string
      *
@@ -23,6 +28,21 @@ class Task
      */
     private $description;
 
+    /**
+     * @var string
+     *
+     * @JMS\Type(name="string")
+     */
+    private $status;
+
+    /**
+     *
+     */
+    public function __construct()
+    {
+        $this->status = self::STATUS_PENDING;
+    }
+
     /**
      * @return string
      */
@@ -54,4 +74,52 @@ class Task
     {
         $this->description = $description;
     }
+
+    /**
+     * @return string
+     */
+    public function getStatus()
+    {
+        return $this->status;
+    }
+
+    /**
+     * @param string $status
+     */
+    public function setStatus($status)
+    {
+        $this->status = $status;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isPending()
+    {
+        return $this->status == self::STATUS_PENDING;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isCompleted()
+    {
+        return $this->status == self::STATUS_COMPLETED;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isWaiting()
+    {
+        return $this->status == self::STATUS_WAITING;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isDeleted()
+    {
+        return $this->status == self::STATUS_DELETED;
+    }
 }
\ No newline at end of file
diff --git a/src/Taskwarrior.php b/src/Taskwarrior.php
index e81e5ae..cc6322d 100644
--- a/src/Taskwarrior.php
+++ b/src/Taskwarrior.php
@@ -3,9 +3,8 @@
 namespace DavidBadura\Taskwarrior;
 
 use JMS\Serializer\SerializerBuilder;
-use Symfony\Component\Process\ProcessBuilder;
 use Symfony\Component\Filesystem\Filesystem;
-
+use Symfony\Component\Process\ProcessBuilder;
 
 /**
  * @author David Badura <d.a.badura@gmail.com>
@@ -25,7 +24,7 @@ class Taskwarrior
     /**
      * @param string $taskrc
      * @param string $taskData
-     * @param array  $rcOptions
+     * @param array $rcOptions
      */
     public function __construct($taskrc = '~/.taskrc', $taskData = '~/.task', $rcOptions = [])
     {
@@ -98,12 +97,26 @@ class Taskwarrior
         return $result;
     }
 
+    /**
+     * @param string $filter
+     * @return Task[]
+     */
+    public function filterPending($filter = '')
+    {
+        return $this->filter($filter . ' status:pending');
+    }
+
     /**
      * @param Task $task
      */
     public function delete(Task $task)
     {
-        // todo
+        if (!$task->getUuid()) {
+            return;
+        }
+
+        $this->command('delete', $task->getUuid());
+        $task->setStatus(Task::STATUS_DELETED);
     }
 
     /**
@@ -111,7 +124,12 @@ class Taskwarrior
      */
     public function done(Task $task)
     {
-        // todo
+        if (!$task->getUuid()) {
+            return;
+        }
+
+        $this->command('done', $task->getUuid());
+        $task->setStatus(Task::STATUS_COMPLETED);
     }
 
     /**
@@ -167,7 +185,7 @@ class Taskwarrior
     /**
      * @param string $command
      * @param string $filter
-     * @param array  $options
+     * @param array $options
      * @return string
      * @throws TaskwarriorException
      */
diff --git a/tests/TaskwarriorTest.php b/tests/TaskwarriorTest.php
index 8d8625d..aff7826 100644
--- a/tests/TaskwarriorTest.php
+++ b/tests/TaskwarriorTest.php
@@ -116,6 +116,65 @@ class TaskwarriorTest extends \PHPUnit_Framework_TestCase
         $this->assertCount(2, $this->taskwarrior->filter());
     }
 
+    public function testPending()
+    {
+        $task1 = new Task();
+        $task1->setDescription('foo1');
+
+        $this->taskwarrior->save($task1);
+
+        $this->assertEquals(Task::STATUS_PENDING, $task1->getStatus());
+        $this->assertTrue($task1->isPending());
+
+        $this->taskwarrior->clear();
+        $result = $this->taskwarrior->find($task1->getUuid());
+
+        $this->assertEquals(Task::STATUS_PENDING, $result->getStatus());
+        $this->assertTrue($result->isPending());
+
+        $this->assertCount(1, $this->taskwarrior->filterPending());
+    }
+
+    public function testDelete()
+    {
+        $task1 = new Task();
+        $task1->setDescription('foo1');
+
+        $this->assertCount(0, $this->taskwarrior->filter());
+
+        $this->taskwarrior->save($task1);
+        $this->assertCount(1, $this->taskwarrior->filter());
+        $this->assertCount(1, $this->taskwarrior->filterPending());
+        $this->assertFalse($task1->isDeleted());
+        $this->assertEquals(Task::STATUS_PENDING, $task1->getStatus());
+
+        $this->taskwarrior->delete($task1);
+        $this->assertCount(1, $this->taskwarrior->filter());
+        $this->assertCount(0, $this->taskwarrior->filterPending());
+        $this->assertTrue($task1->isDeleted());
+        $this->assertEquals(Task::STATUS_DELETED, $task1->getStatus());
+    }
+
+    public function testCompleted()
+    {
+        $task1 = new Task();
+        $task1->setDescription('foo1');
+
+        $this->assertCount(0, $this->taskwarrior->filter());
+
+        $this->taskwarrior->save($task1);
+        $this->assertCount(1, $this->taskwarrior->filter());
+        $this->assertCount(1, $this->taskwarrior->filterPending());
+        $this->assertFalse($task1->isCompleted());
+        $this->assertEquals(Task::STATUS_PENDING, $task1->getStatus());
+
+        $this->taskwarrior->done($task1);
+        $this->assertCount(1, $this->taskwarrior->filter());
+        $this->assertCount(0, $this->taskwarrior->filterPending());
+        $this->assertTrue($task1->isCompleted());
+        $this->assertEquals(Task::STATUS_COMPLETED, $task1->getStatus());
+    }
+
     public function testModifyDescription()
     {
         $task1 = new Task();