Shelly,
Writing out your expectations in advance of delegating work to an employee is a great way to ensure clear communication and accomplishes two additional things. As you stated, it provides you with an opportunity to reflect and write out your specific requirements, which the employee then hears exactly what you expect. Second, if you provide them with an outline of the expectations, it can be used as a checklist to assess the performance. This approach eases the task of delegation and establishes an objective means of evaluation.
Dr. Robert Roehrich