§ 103.40 Joint employers.

(a) An employer, as defined by Section 2(2) of the National Labor Relations Act (the Act), may be considered a joint employer of a separate employer's employees only if the two employers share or codetermine the employees' essential terms and conditions of employment. To establish that an entity shares or codetermines the essential terms and conditions of another employer's employees, the entity must possess and exercise such substantial direct and immediate control over one or more essential terms or conditions of their employment as would warrant finding that the entity meaningfully affects matters relating to the employment relationship with those employees. Evidence of the entity's indirect control over essential terms and conditions of employment of another employer's employees, the entity's contractually reserved but never exercised authority over the essential terms and conditions of employment of another employer's employees, or the entity's control over mandatory subjects of bargaining other than the essential terms and conditions of employment is probative of joint-employer status, but only to the extent it supplements and reinforces evidence of the entity's possession or exercise of direct and immediate control over a particular essential term and condition of employment. Joint-employer status must be determined on the totality of the relevant facts in each particular employment setting. The party asserting that an entity is a joint employer has the burden of proof.