I have two points to make.
If there is a right to strike, most of the services would be declared essential. Ultimately and practically, there would be no right to strike either.
Our experience in the latest bargaining rounds shows the following. Since there is also binding arbitration in the core public administration service, the changes are about 0.25%. There is not a great deal of fluctuation in terms of the current experience in arbitration orders that would lead us to believe that an arbitration decision would result in astronomical costs.