Does an employee have to recertify their medical certification?

Your leave approving official may require subsequent medical recertification on a periodic basis, but not more than once every 30 calendar days, for leave taken for purposes relating to pregnancy, chronic conditions, or long-term conditions (under the definition of serious health condition). For leave taken for all other serious health conditions and including leave taken on an intermittent or reduced leave schedule, if the health care provider has specified on the medical certification a minimum duration of the period of incapacity, the agency may not request recertification until that period has pas sed. An agency may require subsequent medical recertification more frequently than every 30 calendar days, or more frequently than the minimum duration of the period of incapacity specified on the medical certification, if the employee requests that the or iginal leave period be extended, the circumstances described in the original medical certification have changed significantly, or the agency receives information that casts doubt upon the continuing validity of the medical certification.