Uber Eats and DoorDash workers could see a bump from New York City's new tipping law. The companies say it'll hurt them.

New York City's law mandating an option to tip when customers pay for their order takes effect on January 26.

Tom Williams/CQ-Roll Call, Inc via Getty Images

• A New York City law requiring a tip prompt on apps like Uber Eats takes effect on Monday.
• The delivery services will have to add a default 10% tip prompt at checkout.
• Uber and DoorDash have fought the law in court and say it will lead to fewer orders.

New York City's food delivery workers could see a...