A person may appeal to a labour court for a provision to be annulled or unenforceable under those provisions, and if the court finds that the remedy is well founded, it must issue an order stating that the provision is annulled or that the rule is not applicable. This could cause the employer and/or union to reconsider the change, especially if they have not understood that the change could be problematic for you (and possibly for other) employees. The “Acas Code of practice on disclosure of information to trade unions for collective bargaining” (PDF, 469KB) Collective bargaining is only possible if an employer recognizes a union and decides together on the scope of bargaining. Pro`s collective agreement guarantees fair rules of the contractual relationship and fair remuneration. Collective agreements also include decisions on working time and overtime pay. . . .