More than half a million California health care workers are expected to see a pay increase in January thanks to a law raising the minimum wage for their industry.

Unions won major victories in this year’s legislative session on pay for fast food and health care workers, benefits for strikers and bargaining rights. Business groups say labor has too much power at the Capitol. Assembly Speaker Robert Rivas says unions are counting on lawmakers to deliver results.

Up to 40,000 union members at the health care giant are expected to protest in solidarity with striking engineers across the Bay Area and Sacramento.