By Gina Roccanova, Meyers Nave Riback Silver & Wilson PLC (November 22, 2016, 12:34 PM EST) -- According to the U.S. Department of Commerce, as of May 2015, some 2.9 million people worked as "temporary help service workers," employed by temp agencies — a historic high. That number makes up 2.4 percent of the total private sector work force. Another 5.9 million work for franchises such as McDonald's, and, according to an industry association, an additional 2.7 to 3.4 million work on an ongoing basis through professional employment organizations (PEO), which assume all of the payroll, benefits and human resources functions of their client entities and, most importantly, serve as the employer of record for those employees....