https://www.reuters.com/article/us-uber-lawsuit-california/uber-postmates-sue-to-block-california-gig-worker-law-claiming-its-unconstitutional-idUSKBN1YZ03O

Ride-hailing company Uber Technologies Inc and courier services provider Postmates Inc asked a U.S. court to block a California labor law set to go into effect on Wednesday, arguing the bill violates the U.S. Constitution.