The world's largest online retailer is facing work-stopping protests from employees around the world — on the busiest shopping days of the year.

The UNI Global Union, an international labor group, and Progressive International, a "post-capitalist" political umbrella group, are organizing strikes at Amazon facilities in more than 20 countries, according to ABC News.

The actions are scheduled to run from Black Friday (the global term for the Friday after Thanksgiving in the U.S.) through Cyber Monday, covering the weekend that traditionally kicks off the holiday shopping season.

The "Make Amazon Pay" action is in its fifth year, according to a UNI Global news release.

It includes actions by Amazon employees in "Germany, the United States, the United Kingdom, Sweden, and beyond," the release stated.

The effort is also targeting Amazon facilities in India, attacking the company's treatment of employees during a deadly heat wave in the country over the summer.

The campaign exists "to hold Amazon accountable for labor abuses, environmental degradation and threats to democracy," the UNI Global release claimed.