https://phys.org/news/2018-11-spanish-amazon-workers-black-friday.html

Ana Berceruelo of the CCOO union told AFP that 1,800 workers would have the opportunity to join the strike, although it is as yet unclear how many will take part.

The strikes will take place on November 23 and 24, or Amazon's mega "Black Friday" sales bonanza, as well as December 7, 9, 15, and 30, and January 3 and 4—all "days of high workload for Amazon," she said.