Wildcats strikes are seen as illegal in Germany, as they are not endorsed by a union as a party capable of entering into a collective agreement. Participating in a wildcat strike is considered a refusal to work and can be met by repercussions such as a warning or the termination of one's contract by the employer on an individual level. A union can however retroactively endorse a wildcat strike, therefore making it legal ex tunc.Bundesarbeitsgericht, September 5th 1955 – 1 AZR 480/54.
