the group health plan shall provide, at the time of commencement of coverage under the plan, written notice to each covered employee and spouse of the employee (if any) of the rights provided under this subsection,

the employer of an employee under a plan must notify the administrator of a qualifying event described in paragraph (1), (2), (4), or (6) of section 1163 of this title within 30 days (or, in the case of a group health plan which is a multiemployer plan, such longer period of time as may be provided in the terms of the plan) of the date of the qualifying event,

each covered employee or qualified beneficiary is responsible for notifying the administrator of the occurrence of any qualifying event described in paragraph (3) or (5) of section 1163 of this title within 60 days after the date of the qualifying event and each qualified beneficiary who is determined, under title II or XVI of the Social Security Act [42 U.S.C. 401 et seq., 1381 et seq.], to have been disabled at any time during the first 60 days of continuation coverage under this part is responsible for notifying the plan administrator of such determination within 60 days after the date of the determination and for notifying the plan administrator within 30 days after the date of any final determination under such title or titles that the qualified beneficiary is no longer disabled, and