Sufficient medical certification to support your request for FMLA leave. The FMLA permits an employer to require that you submit a timely, complete, and sufficient medical certification to support your request for FMLA.Leave forms and documentation necessary to request leave can be found at the tab to your left. In order to request Family Medical Leave Act FMLA benefits, you must generally give your employer 30 days written notice if it is not an emergency situation. The FMLA entitles eligible employees of covered employers to take unpaid, job-protected leave for specified family and medical reasons. This certification must be returned to the Leave Office within 15 days of the request for leave. Employee Complete This Section (Please Print or Type):. Approved employee request for Professional Development Leave.