of entitlement to such leave. (b) Timeliness of certification An eligible employee shall provide, in a timely manner, a copy of the certification required by subsection (a) to the employer. (c) Sufficient certification A copy of the notification, call, or order described in section 4402(a)(2) of this title shall be considered sufficient certification of entitlement to leave for purposes of providing certification under this section. The Secretary may prescribe such additional forms and manners of certification as the Secretary considers appropriate for purposes of providing certification under this section. 4404. Employment and benefits protection (a) In general An eligible employee who takes leave under section 4402 of this title for the intended purpose of the leave shall be entitled, on return from such leave— (1) to be restored by the employer to the position of employment held by the eligible employee when the leave commenced