403(b) Retirement Plan Services for NJ and NYC. Give your non-profit staff the retirement plan they want.O Submit your application and option selection to the retirement plan office. (the "Hospital") established the Middlesex Retirement. • A copy of your marriage certificate. The IRS provides the following additional resources for taxexempt organizations interested in establishing retirement plans for employees. In the nonprofit sector, almost one million workers — half the workers in the sector — do not have access to a workplace retirement plan. By 2046, the number of older adults and seniors will nearly double, accounting for. Membership in a contributory retirement system is mandatory for nearly all Massachusetts public employees who are regularly employed on a full-time basis. This guide has information which is not in the income tax package and which you may need to fill out your income tax and benefit return.