The U.S. Department of Labor issued new guidance on when companies including staffing agencies and contractors can be classified as “joint employers” and be held liable for labor violations and workers’ comp. According to the Department, the guidance could affect companies ranging from construction firms to restaurant chains that might be held responsible for temp workers. The fifteen page document explains how to analyze joint employment in “vertical” arrangements, when one company contracts with another company, and “horizontal” arrangements, when one worker is employed by two related companies. A Reuters report notes that the guidance comes as the Obama administration is moving to make millions more Americans eligible for overtime pay under the FLSA. The Labor Department issued a proposed rule last year that would more than double the maximum income a salaried worker can earn and still be eligible for mandatory overtime to $50,440.