To give you one example: I used to work for one of Germany's biggest telcos. Believe it or not: That company is unable to do geographically-targeted advertising for reasons of worker codetermination. Worker reps in the company's supervisory board argue that, since some employees get part of their compensation through sales commissions, targeting advertising to region X gives employees in region X an unfair advantage to earn more money than employees in other regions.
Working for the same company, I was involved in a project to do natural language processing in a ticket system the company was using to track repair and maintenance work of radio units, with the goal of building a model to recognize tickets that were in increased need of attention by higher-level management. Even though it wasn't initially the project's goal to do so, the thing that the model ultimately picked up on was basically indications of employees being lazy as they handle those tickets. -- But the data I was given was anonymized. It was argued that if it weren't anonymized, my project would have never been approved by worker representatives in the supervisory board for reasons of violating workers' right to "data protection".