The minimum wage for staff working at large hotels in Los Angeles is to be raised to $15.37 (£9.41) per hour.
Los Angeles city council has voted to approve the rise for hotels with more than 300 rooms on July 1, 2015 and for hotels with more than 150 rooms a year later.
California’s current minimum hourly wage is $9, rising to $10 by January 1, 2016.
Wednesday’s vote comes after Seattle’s city council voted to raise its hourly minimum to $15 over several years. San Francisco will vote on a similar rise in November.
The Los Angeles measure was opposed by the hotel industry, which said it would force worker redundancies, the BBC reported.
Some hotel industry executives suggested employees who receive tips should be exempt.
It is unclear how many workers the rise will affect. An earlier study, based on a threshold of 125 rooms, estimated the number at 13,000 employees, the Los Angeles Daily News reported.