29 CFR 778.410 - The guaranty under section 7(f).
(a) The statute provides that the guaranty must be a weekly guaranty. A guaranty of monthly, semimonthly, or biweekly pay (which would allow averaging wages over more than one workweek) does not qualify under this paragraph. Obviously guarantees for periods less than a workweek do not qualify. Whatever sum is guaranteed must be paid in full in all workweeks, however short in which the employee performs any amount of work for the employer. The amount of the guaranty may not be subject to proration or deduction in short weeks.
(b) The contract must provide a guaranty of pay. The amount must be specified. A mere guaranty to provide work for a particular number of hours does not qualify under this section.
(c) The pay guaranteed must be “for not more than 60 hours based on the rate so specified.”