MMC Benefits Handbook
When Coverage Begins
When does my retiree medical coverage begin?
If you decide to elect to participate, your Retiree Medical Coverage Participation Date will be reflected as the 1st of the month following your termination, or if you defer your election and elect coverage at a later date, the 1st of any month, but no later than the 1st of the month following the attainment of age 65 (retiree medical coverage participation dates always are on the 1st of a month).