An inter-company savings plan may be set up by collective agreement concluded under the conditions set out in Book II of Part Two.
If this plan is set up between several individual employers, it may also be established according to one of the methods provided for in articles L. 3332-3 and L. 3332-4. In this case, the plan is approved in the same terms within each of the companies and those wishing to join or leave the plan must do so using one of these methods.