issued at such time and in such manner as the Secretary may by regulation prescribe. If the Secretary issues a regulation requiring such certification, the employee shall provide, in a timely manner, a copy of such certification to the employer. . (F) Failure to return from leave Section 104(c) of such Act ( 29 U.S.C. 2614(c) ) is amended— (i) in paragraph (2)(B)(i), by inserting before the semicolon the following: , or a death that entitles the employee to leave under section 102(a)(1)(F)