Verdi has comparable contracts in place with other German retailers and has been staging strikes since at least 2013 in an attempt to get Amazon to agree to something similar. The union’s spokesperson Andre Scheer confirmed the strike was underway and that roughly 2,500 workers were expected to participate by the time it ends on Saturday night.
https://edition.cnn.com/2020/11/27/tech/amazon-global-bonus-germany-strike/index.html