29 CFR § 778.332 - Awards for activities not normally part of employee's job.
(a) Where the prize is awarded for activities outside the customary working hours of the employee, beyond the scope of his customary duties or away from the employer's premises, the question of whether the compensation is remuneration for employment will depend on such factors as the amount of time, if any, spent by the employee in competing, the relationship between the contest activities and the usual work of the employee, whether the competition involves work usually performed by other employees for employers, whether an employee is specifically urged to participate or led to believe that he will not merit promotion or advancement unless he participates.
(b) By way of example, a prize paid for work performed in obtaining new business for an employer would be regarded as remuneration for employment. Although the duties of the employees who participate in the contest may not normally encompass this type of work, it is work of a kind normally performed by salesmen for their employers, and the time spent by the employee in competing for such a prize (whether successfully or not) is working time and must be counted as such in determining overtime compensation due under the Act. On the other hand a prize or bonus paid to an employee when a sale is made by the company's sales representative to a person whom he recommended as a good sales prospect would not be regarded as compensation for services if in fact the prize-winner performed no work in securing the name of the sales prospect and spent no time on the matter for the company in any way.