§1620.16 Jobs requiring equal effort in performance.

(a) In general. The jobs to which the equal pay standard is applicable are jobs that require equal effort to perform. Where substantial differences exist in the amount or degree of effort required to be expended in the performance of jobs, the equal pay standard cannot apply even though the jobs may be equal in all other respects. Effort is concerned with the measurement of the physical or mental exertion needed for the performance of a job. Job factors which cause mental fatigue and stress, as well as those which alleviate fatigue, are to be considered in determining the effort required by the job. “Effort” encompasses the total requirements of a job. Where jobs are otherwise equal under the EPA, and there is no substantial difference in the amount or degree of effort which must be expended in performing the jobs under comparison, the jobs may require equal effort in their performance even though the effort may be exerted in different ways on the two jobs. Differences only in the kind of effort required to be expended in such a situation will not justify wage differentials.