A collective agreement is decided autonomously by the labor and management aiming at achieving a stable labor-management relationship. It is a legal entity and both parties are obliged to stick to the regulations faithfully.
The parties involved in the collective agreement must not commit themselves to industrial action for a change of the agreement. They are also obligated to discourage other workers from industrial action (obligation for peace), which is not a clause in the collective agreement, but rather an inherent obligation.
Accordingly, it is not possible to engage in industrial action demanding any changes in the collective agreement during its validity. In case of violation, the person will be subject to civil and penal liability.