Work performed
(6) Work performed. For purposes of this paragraph (e), in measuring the amount of work of an individual performing particular services, the work performed is determined based on the individual's hours of service (as defined under section 410(a)(3)(C)), except that a plan may use a different measure of work if appropriate under the facts and circumstances. For example, a plan may provide for a university professor's work to be measured by the number of courses taught during an annual work period in any case in which that individual's work assignment is generally based on a specified number of courses to be taught. (7) Most recent one-year period of service. For purposes of paragraph (d) of this section, in the case of a part-time employee or a full-time employee who is employed for only part of the year determined on the basis of the employer's annual work period, the employee's most recent periods of service are aggregated to determine his or her most recent one-year period of service. In such a case, there is first taken into account his or her service during the annual work period for which the last year of service's includible compensation is being determined; then there is taken into account his or her service during his or her next preceding annual work period based on whole months; and so forth until the employee's service equals, in the aggregate, one year of service. (8) Less than one year of service considered as one year. If, at the close of a taxable year, an employee has, after application of all of the other rules in this paragraph (e), some portion of one year of service (but has accumulated less than one year of service), the employee is deemed to have one year of service. Except as provided in the previous sentence, fractional years of service are not rounded up. (9) Examples. The provisions of this paragraph (e) are illustrated by the following examples: