On Thursday the National Labor Relations Board (NLRB) ruled the owner of a California recycling plant was a “joint employer” with the contractor that hired workers at the plant, essentially forcing both to bargain with the union together or risk violating U.S. labor law. Business groups, arguing that the ruling could lead to higher costs and hurt the economy, are pushing the Republican-led Congress to overturn it, in part it because the company named in the decision – Browning-Ferris – cannot challenge it in a federal court without overcoming a number of procedural hurdles.