Mandatory extension of collective agreements to non-organised employers.

1. There are neither legal provisions for mandatory extension, nor is there a functional equivalent.
2. Extension is rather exceptional, used in some industries only, because of absence of sector agreements, very high thresholds (supermajorities of 60% or more, public policy criteria, etc.), and/or resistance of Employers.
3. Extension is used in many industries, but there are thresholds and Ministers can (and sometimes do) decide not to extend (clauses in) collective agreements.
4. Extension is virtually automatic and more or less general (including enlargement).