Amazon workers in more than 20 countries including the U.S. plan to strike and hold protests between Black Friday, November 29, and Cyber Monday, which falls on December 2, according to the activists organizing the labor action.

Thousands of warehouse workers and delivery drivers will strike during the retailer's biggest sale day this week.

Amazon workers in more than 20 countries plan to strike and take part in protests starting on Black Friday, one of the biggest annual shopping days for retailers. The protest efforts will go on into Cyber Monday, one of the biggest online shopping days of the year.