7. Notwithstanding the provisions of any other general law or special act, a strike or a lock-out in an establishment is prohibited unless the parties are entitled thereto under the Labour Code and a prior agreement has been concluded between the parties respecting the essential services which must be maintained during a strike or a lock-out and respecting the manner in which such services are to be maintained or unless, failing such an agreement between the parties, a decision is rendered by the commissioner or an assistant commissioner, in accordance with section 11 of this act.
An agreement or a decision shall deal, in particular, with the minimum number of occupational posts which must be filled effectively by regular employees in order to provide essential services, and with the availability of such services to and the special needs of recipients.