Drivers for companies such as Uber and Lyft won the right to unionize in Massachusetts, election results showed Wednesday, as voters pushed through a first-of-a-kind ballot referendum backed by national labor groups. The measure will permit transportation ...

Massachusetts voters on Tuesday approved a ballot measure that would allow ride-share drivers to unionize, becoming the first U.S. state to allow drivers for app-based companies like Uber and Lyft to do so.

A state ballot measure was the first of its kind in the United States, but labor advocates worry it could lock Uber and Lyft drivers out of full-time employment status.