With its coffee known ‘round the world, Seattle now has “stirred up” an interesting mix of labor law and antitrust law as applied to the on-demand economy taking shape across the world. In 2015, Seattle enacted an ordinance designed to help labor unions organize drivers of Uber and Lyft. (Uber and Lyft apparently assert that their drivers are independent contractors.) Two lawsuits were filed challenging the ordinance, including one by the U.S. Chamber of Commerce. In that lawsuit, a federal judge issued a preliminary injunction to stop enforcement of the law while the ligation proceeds. A Teamsters local union is seeking to use the law to get names and addresses of drivers so that it can try to organize the drivers. The Chamber contends that the ordinance violates federal and state antitrust law to the extent that it would allow independent contractors (that is, the drivers) to form a cartel (that is, the union) in order to engage in price fixing. Alternatively, the Chamber argues the ordinance is preempted by the National Labor Relations Act. Many classical economists contend that labor unions are price-fixing collectives seeking anti-competitive power in a relevant market. We will keep you posted as this case percolates through a likely appeal, no matter which side wins.