29 CFR §780.309

Section 3(e)(1) specifically excludes from the employer's man-day total (as defined in section 3(u)) employees who qualify for exemption under section 13(a)(6)(B). See § 780.301. This man-day count is a basic factor in the application of the section 13(a)(6)(A) exemption. See § 780.302 et seq.