8 AZR 488/19 Federal Labor Court (Bundesarbeitsgericht)
The claimant, a female employee, exercised her right under the Transparency in Wage Structures Act (available here: https://www.gesetze-im-internet.de/entgtranspg/BJNR215210017.html) to obtain information from her employer about the average salary in the group of colleagues who performed the same or equivalent work as she did as a head of department. She found that her compensation was below average.