29 CFR 531.3 – General determinations of “reasonable cost.”
(a) The term reasonable cost as used in section 3(m) of the Act is hereby determined to be not more than the actual cost to the employer of the board, lodging, or other facilities customarily furnished by him to his employees.
(b) Reasonable cost does not include a profit to the employer or to any affiliated person.
(c) Except whenever any determination made under § 531.4 is applicable, the “reasonable cost” to the employer of furnishing the employee with board, lodging, or other facilities (including housing) is the cost of operation and maintenance including adequate depreciation plus a reasonable allowance (not more than 5
(d)(1) The cost of furnishing “facilities” found by the Administrator to be primarily for the benefit or convenience of the employer will not be recognized as reasonable and may not therefore be included in computing wages.
(2) The following is a list of facilities found by the Administrator to be primarily for the benefit of convenience of the employer. The list is intended to be illustrative rather than exclusive: (i) Tools of the trade and other materials and services incidental to carrying on the employer’s business; (ii) the cost of any construction by and for the employer; (iii) the cost of uniforms and of their laundering, where the nature of the business requires the employee to wear a uniform.