CA SB878

Requires employers in grocery stores, restaurants, and retail establishments to provide employees with work schedules at least 7 calendar days in advance.

Mandates employers pay "modification pay" to employees when shifts are cancelled, moved, or added with less than 7 days' notice, or for on-call shifts where employees are required to be available but not called in to work.

Requires employers to display a poster informing employees of their modification pay rights and prohibits retaliation against employees who file complaints or cooperate with investigations.

Authorizes the Labor Commissioner to investigate violations and impose administrative penalties of up to $4,000, and allows employees or the Attorney General to pursue civil actions with penalties up to $4,000 plus reasonable attorney's fees.

Provides exceptions to modification pay requirements for emergencies, utility failures, acts of God, employee absences due to illness or vacation, mutual shift trades, and mandatory overtime.