CFR 1998 annual edition (revised as of 1998-04-01) · in effect Apr 1, 1997 to Apr 1, 1999 · last amended by T.D. 8375, 56 FR 63416, Dec. 4, 1991
(b) Minimum participation rule for former employees. Except as set forth in paragraph (c) of this section, a plan that is subject to this section must benefit at least the lesser of:
(1) 50 former employees of the employer, or
(2) 40 percent of the former employees of the employer.
(c) Special rule. A plan satisfies the minimum participation rule in paragraph (b) of this section if the plan benefits at least five former employees, and if either:
(1) More than 95 percent of all former employees with vested accrued benefits under the plan benefit under the plan for the plan year, or
(2) At least 60 percent of the former employees who benefit under the plan for the plan year are nonhighly compensated former employees.