Amazon workers in more than 20 countries, including the United States and the United Kingdom, plan to hold protests or go on strike between Black Friday and Cyber Monday, two of the marquee shopping promotions of the year, according to organizers.

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.