On Thursday, the NLRB proposed a rule that would overturn the Obama-era Browning Ferris standard. If this rule is passed, only employers who have direct influence over their employees will be defined as “joint employers.” This definition is narrow in contrast to the current standard which holds that a company that exerts direct or indirect control is considered a joint employer. Business groups have a strong interest in overturning the Browning-Ferris standard because it broadens the definition of the types of employers that can be held responsible for labor law violations.
See "U.S. labor board to ease companies’ liability for contractors' labor practices", Daniel Wiessner, Reuters, September 14, 2018