The National Consultative Commission on Collective Agreements (CCNCC) has two tools that provide guidance on the possible collective agreement that may be applicable to a work centre, depending on its main activity: the Collective Bargaining Map and access to opinions issued in response to prior consultations.
In case of doubt, or if you do not find an answer through these tools, you can submit a formal consultation through the link to the requirements you must meet, available on this homepage.