29 CFR 778.117 : Labor (§ 0.735-1 To Parts 4908-4999) — (§ 500.0 To Parts 871-899) — Regulations Relating To Labor (Continued) (§ 500.0 To Parts 871-899) — Wage And Hour Division, Department Of Labor (§ 500.0 To Parts 871-899) — Statements Of General Policy Or Interpretation Not Directly Related To Regulations (§ 775.0 To § 794.144) — Overtime Compensation (§ 778.0 To § 778.603) — The Overtime Pay Requirements (§ 778.100 To § 778.122) — Principles For Computing Overtime Pay Based On The “Regular Rate” (§ 778.107 To § 778.122) — Commission payments - general.

4 Aug 2016

Commissions (whether based on a percentage of total sales or of sales in excess of a specified amount, or on some other formula) are payments for hours worked and must be included in the regular rate. This is true regardless of whether the commission is the sole source of the employee's compensation or is paid in addition to a guaranteed salary or hourly rate, or on some other basis, and regardless of the method, frequency, or regularity of computing, allocating and paying the commission. It does not matter whether the commission earnings are computed daily, weekly, biweekly, semimonthly, monthly, or at some other interval. The fact that the commission is paid on a basis other than weekly, and that payment is delayed for a time past the employee's normal pay day or pay period, does not excuse the employer from including this payment in the employee's regular rate.

29 CFR 778.117
[36 FR 4981, Mar. 16, 1971]