Staffing buyers with operations in Los Angeles may soon have to pay more. The Los Angeles City Council voted Tuesday to raise the minimum wage to $15 per hour by 2020 for large businesses and by 2021 for smaller businesses, according to news reports.

Los Angeles is the largest US city to raise its minimum wage to $15. The move could reverberate in Southern California and across the US, including New York, according to The New York Times. Other cities such as Seattle and San Francisco have already adopted $15 minimum wages, and Facebook announced last week a $15 minimum wage for its contractors’ employees.

Efforts to raise the minimum wage to $15 per hour are growing, according to a statement by Christine Owens, executive director of the National Employment Law Project.

“It started with the small town of SeaTac, Washington in late 2012, spread to Seattle and San Francisco, was embraced by employers like Facebook and Aetna, and has been incorporated in legislative and ballot proposals in Washington D.C., Portland, Maine, and elsewhere,” Owens said in a statement. “Voters, local officials and responsible business people are responding to the ‘fierce urgency of now’ demanded by the Fight for $15 with strong minimum wage increases.”

Separately, a news report announced Los Angeles County will take a closer look at wage theft allegations at the ports of Los Angeles and Long Beach.