(Reuters] – Amazon.com Inc (NASDAQ) announced that its COVID-19-based giant online retailer will be ending the paid time-off policy it had for employees on Saturday.

According to it, the changes were made in response to COVID-19 and revised guidelines from the U.S. Centers for Disease Control and Prevention.

Amazon informed workers that U.S. employees will be granted five days unpaid, excused leave after a COVID-19 confirmation.

According to the company, “We are able to continue to safely adapt to our preCOVID policy,” citing continued ease of pandemics, availability of vaccines and treatment, as well as updated guidance for public health.

These changes are occurring amid Amazon’s ongoing challenges following a recent attempt to unionize warehouses. Workers at the warehouse in New York City decided to create their first union in April.

Amazon stated that they will not be able to notify the entire site of any positive case in its facilities on Saturday, other than as required under law.

Amazon cut paid leave for virus-infected workers to just one week or 40 hours in January. Prior to that they had two weeks of paid leave for COVID-19.