Illustration by Alex Castro / The Verge

Starting on November 1st, Amazon will pay all its US employees a minimum wage of $15 an hour in a move the e-commerce giant expects will impact more than 250,000 full- and part-time employees and 100,000 seasonal workers. Amazon has also said that it will be lobbying for an increase in the federal minimum wage, which is currently set at $7.25 an hour.

Amazon has been facing increasingly severe backlash over the treatment of its warehouse workers. Sen. Bernie Sanders (I-VT) has previously taken aim at the company's median salary of around $28,000, claiming that one in three Amazon workers in Arizona are on public assistance. A recent Amazon SEC filing put the median salary at $28,446 (implying half its workers are earning less). A $15 hourly salary for an employee working 40 hours per week translates to a gross yearly income of $31,200 before overtime, or about $30,000 per year with two weeks unpaid vacation.

This $15 hourly wage will be paid without the need to hit any targets, the company says. Operations and Customer Service employees who already make hourly salaries of $15 will also see an unspecified increase. Wages for retail sales workers in the US average $13.20, according to the Bureau of Labor Statistics.

"We listened to our critics, thought hard about what we wanted to do, and decided we want to lead," said Amazon CEO Jeff Bezos in a statement. "We're excited about this change and encourage our competitors and other large employers to join us."

The company also announced that it would be imposing a minimum wage of £9.50 in the UK (up from £8.50), rising to £10.50 (previously £8.20) for employees in the expensive London area. The UK's Living Wage Foundation defines a living wage as £8.75 across the UK, rising to £10.20 in London. Amazon's new minimums exceed both.

The move was met with cautious praise by campaigners. James Bloodworth, the British journalist who spent three weeks working undercover at an Amazon fulfillment center in the UK, tweeted, "This is good, though a lot more still to do…now stop with the draconian productivity targets are disciplinary policies."

Amazon isn't the only company to raise its salaries in the light of criticism. Earlier this year, The Walt Disney Company agreed to increase wages for some of its Walt Disney World workers to $15 an hour. Walmart and Target both increased their respective minimum wages to $11 an hour this year, with Target planning to raise it to $15 in 2020.