I would like to know if one elects the 5 year backdrop are they able to work past the 5th year (and still get the backdrop) or is it mandatory to retire that year?
No, it is not mandatory to retire in the 5th year of your BackDROP. Your BackDROP* payment is based on the time worked after your normal retirement date. You may work more than five years beyond normal retirement eligibility, but the maximum BackDROP period is limited to five years prior to your actual retirement date.
Generally speaking, if you elect a longer BackDROP period, your lump sum will be more, but your monthly payment will be less. You are not required to take BackDROP, regardless of how long you work beyond normal retirement eligibility, and you don�t have to notify MOSERS of any decisions about BackDROP until you retire.
*BackDROP is an option that allows eligible members to receive a lump-sum payment in addition to an ongoing monthly payment. It is available only to general state employees who are members of MSEP & MSEP 2000 and who work at least two years beyond normal retirement eligibility.