medical certification

Definition from Nolo’s Plain-English Law Dictionary

A document an employer may require an employee to provide when taking leave under the Family and Medical Leave Act (FMLA). The medical certification form must be completed by a health care provider and must include facts sufficient to demonstrate that the employee (or the employee's family member, if the employee is taking time off to care for him or her) has a serious health condition as defined by the FMLA.

Definition provided by Nolo’s Plain-English Law Dictionary.