(ii) Employer Y maintains a defined benefit pension plan. The plan provides that an employee acquires a nonforfeitable right to 100 percent of the employee's accrued benefit derived from employer contributions upon completion of 10 years of service. As conditions for participation, the plan requires that an employee of Y complete one year of service and provides that if an employee has incurred a one-year break in service, in computing the employee's period of service for eligibility to participate, years of service before such break will not be taken into account until the employee has completed a year of service with Y after the employee's return. In accordance with
§ 2530.202-2(b)(1), the plan provides that after the initial eligibility computation period, eligibility computation periods beginning on anniversaries of an employee's employment commencement date will be used. Thus, under
paragraph (a)(1) of this section, the plan must use computation periods beginning on anniversaries of the employee's employment commencement date in measuring one-year breaks in service. Employee C's employment commencement date with Y is February 1, 1975, C is credited with a year of service for eligibility to participate in the eligibility computation period beginning on C's employment commencement date and meets the plan's eligibility requirements as of February 1, 1976. In accordance with the provisions of the plan, C commences participation in the plan as of July 1, 1976. C is thereafter credited with a year of service for eligibility to participate in each of the eligibility computation periods beginning on anniversaries of C's employment commencement date (February 1) in 1976, 1977, 1978 and 1979. Thus, as of February 1, 1980, C is credited with 5 years of service for eligibility to participate. In the eligibility computation period beginning on February 1, 1980, C fails to be credited with more than 500 hours of service and therefore incurs a one-year break in service. In the eligibility computation period beginning on February 1, 1981, C is not credited with an hour of service for the performance of duties until March 1, 1981. Under
paragraph (b)(1)(iii) of this section, March 1, 1981 is C's reemployment commencement date. C terminates employment with Y on May 1, 1981 and fails to be credited with 1000 hours of service in the 12-consecutive-month period beginning on March 1, 1981, or with more than 500 hours of service in the eligibility computation period beginning on February 1, 1981, thereby incurring a second one-year break in service for eligibility to participate. C is credited with no hours of service in the eligibility computation period beginning on February 1, 1982, thereby incurring a third one-year break in service for eligibility to participate, and is likewise credited with no hours of service in the 12-consecutive-month period beginning on March 1, 1982, the anniversary of B's reemployment commencement date. Under
paragraph (b)(1)(iv) of this section, C must therefore be treated as having a new reemployment commencement date as of the first day following the close of the eligibility computation period beginning on February 1, 1982. On January 1, 1984 (before the end of the eligibility computation period beginning February 1, 1983) C is rehired by Y and is credited with an hour of service for the performance of duties. C is therefore treated as having a new reemployment commencement date January 1, 1984. C fails to be credited with more than 500 hours of service in the eligibility computation period beginning on February 1, 1983, thereby incurring a fourth one-year break in service, and fails to be credited with 1000 hours of service in the 12-consecutive-month period beginning on March 1, 1983, the anniversary of C's original reemployment commencement date. However, in the 12-consecutive-month period beginning on January 1, 1984, C is credited with 1000 hours of service, thus meeting the plan's requirement that an employee who has incurred a one-year break in service for eligibility to participate must complete a year of service upon the employee's return in order for years of service before the one-year break in service to be taken into account for purposes of eligibility. Because C's years of service completed before C's first one-year break in service must be taken into account under
section 202(b) of the Act and
section 410(b)(5) of the Code for purposes of eligibility to participate, under
§ 2530.204-2(a)(2) the period beginning on July 1, 1976 (the earliest date on which C was a participant) and extending until January 31, 1980 (the last day before C's first one-year break in service) must be taken into account for purposes of benefit accrual.