Amazon said it will increase its minimum wage to $15 an hour for all U.S. workers, including part-time and temporary holiday employees.

The higher minimum wage, which will go into effect on November 1, comes after the company faced criticism over its pay and treatment of employees. Sen. Bernie Sanders, I.-Vermont, had targeted the online retail giant for paying wages that he said left its employees relying on public assistance for food and shelter, even as Amazon CEO Jeff Bezos now stands as the world’s richest man.

Amazon said the $15 minimum wage will apply to more than 250,000 employees and 100,000 seasonal holiday employees. Workers hired by temp agencies will also receive the $15-per-hour wage. The company also said it would push to raise the federal minimum wage of $7.25 an hour.

The median pay for an Amazon employee last year was $28,446, although that includes executives and other non-warehouse workers, according to government filings. Amazon has a total of more than 575,000 employees around the world.