A German group of blood donation services ran a Facebook page. Visitors could post on it without prior review. Some posts were about employees. One complained about how a staff member had placed the needle. Another accused a doctor of skipping a proper examination. The group works council demanded a say. On 13 December 2016, the Federal Labor Court agreed in part. The page itself could stay. The function for visitor posts, however, counts as a technical device for monitoring employees under Section 87 of the Works Constitution Act. Posts about the conduct and performance of employees who can be identified are public, and they can be stored and evaluated. The employer may switch the function on only with the consent of the works council or a decision of the conciliation board.