(1) As originally enacted in 1967, section 4(f)(2) of the Act provided:

The Department of Labor interpreted the provision as “Authoriz[ing] involuntary retirement irrespective of age: Provided, That such retirement is pursuant to the terms of a retirement or pension plan meeting the requirements of section 4(f)(2).” See 34 FR 9709 (June 21, 1969). The Department took the position that in order to meet the requirements of section 4(f)(2), the involuntary retirement provision had to be (i) contained in a bona fide pension or retirement plan, (ii) required by the terms of the plan and not optional, and (iii) essential to the plan's economic survival or to some other legitimate business purpose - i.e., the provision was not in the plan as the result of arbitrary discrimination on the basis of age.

(2) As revised by the 1978 amendments, section 4(f)(2) was amended by adding the following clause at the end:

The Conference Committee Report expressly states that this amendment is intended “to make absolutely clear one of the original purposes of this provision, namely, that the exception does not authorize an employer to require or permit involuntary retirement of an employee within the protected age group on account of age” (H.R. Rept. No. 95-950, p. 8).

(1) The amendment applies to all new and existing seniority systems and employee benefit plans. Accordingly, any system or plan provision requiring or permitting involuntary retirement is unlawful, regardless of whether the provision antedates the 1967 Act or the 1978 amendments.

(2) Where lawsuits pending on the date of enactment (April 6, 1978) or filed thereafter challenge involuntary retirements which occurred either before or after that date, the amendment applies.

(1) The amendment protects all individuals covered by section 12(a) of the Act. Section 12(a) was amended in October of 1986 by the Age Discrimination in Employment Amendments of 1986, Pub. L. 99-592, 100 Stat. 3342 (1986), which removed the age 70 limit. Section 12(a) provides that the Act's prohibitions shall be limited to individuals who are at least forty years of age. Accordingly, unless a specific exemption applies, an employer can no longer force retirement or otherwise discriminate on the basis of age against an individual because (s)he is 70 or older.

(2) The amendment to section 12(a) of the Act became effective on January 1, 1987, except with respect to any employee subject to a collective bargaining agreement containing a provision that would be superseded by such amendment that was in effect on June 30, 1986, and which terminates after January 1, 1987. In that case, the amendment is effective on the termination of the agreement or January 1, 1990, whichever comes first.