Does having a written plan cause a nonERISA 403(b) plan to become subject to ERISA? This brochure highlights the main benefits of Riverside Community College District's Employee Benefit Program.It is designed to assist you in. All 403(b) plans are subject to Title I of ERISA unless an exemption applies. Leave the assets in the Plan if the Plan balance totals at least. Former employees who have received a "cash-out" distribution or deemed distribution of their entire non-forfeitable accrued benefit. Most employersponsored retirement plans are subject to ERISA requirements. Former employees who have received a "cash-out" distribution or deemed distribution of their entire non-forfeitable accrued benefit. To define the City of Riverside Deferred Compensation Plan as arranged under Section 457 of the.