If the workflow allows, you can give another user the responsibility of performing a task that originally had been assigned to you.
To delegate a task:
In your Inbox, open the task by clicking it.
Click Delegate.
If prompted to specify the user to whom to delegate the task, do these:
On the task’s line item, click click to assign.
In the selection dialog box, select the user to whom to delegate, and click OK.
Click OK.