FMLA provides up to 12 weeks of unpaid, job protected leave to "eligible" employees for certain family and medical reasons. Physician must fill out all of Part II – Healthcare Provider Certification.Information about taking leave under the Family Medical Leave Act (FMLA), including eligibility requirements, allowed use, and timing of your leave. Employees will be required to submit a signed leave request and a completed medical certification from the health care provider. This includes employers which hire more than 50 employees seasonally for less than twenty weeks out of the year. Eligible employees can take up to 12 weeks of FMLA for themselves or a family member. Intermittent Leave under FMLA. (You may request leave again in the future. If eligible for FMLA, employees can apply for up to. If an employee does not provide either a complete and sufficient certification, the employee's request for FMLA leave may be delayed or denied.