Federal Act
on the Amendment of the Swiss Civil Code
(Part Five: The Code of Obligations)

¹ In­di­vidu­al em­ploy­ers and in­di­vidu­al em­ploy­ees in the ser­vice of em­ploy­ers bound by the col­lect­ive em­ploy­ment con­tract may ac­cede to it with the con­sent of the con­tract­ing parties, whereupon they be­come par­ti­cip­at­ing em­ploy­ers and em­ploy­ees.

² The col­lect­ive em­ploy­ment con­tract may stip­u­late the rules gov­ern­ing such ac­ces­sion. Un­reas­on­able con­di­tions at­tach­ing to ac­ces­sion, such as un­reas­on­able mon­et­ary con­tri­bu­tions, may be de­clared void or lim­ited to an ad­miss­ible level by the court; however, clauses and agree­ments in­ten­ded to set con­tri­bu­tions in fa­vour of one in­di­vidu­al con­tract­ing party are al­ways void.

³ Any clause in a col­lect­ive em­ploy­ment con­tract or in­di­vidu­al agree­ment between the con­tract­ing parties in­ten­ded to com­pel mem­bers of as­so­ci­ations to ac­cede to the col­lect­ive em­ploy­ment con­tract is void if such as­so­ci­ations are not en­titled to be­come party to it or to con­clude an ana­log­ous con­tract.