Collective Agreement Act Article 20

If stipulations in a collective agreement are not within the scope of Subparagraphs 1 and 2 of Paragraph 1 to Article 12, they cannot have any effect on those matters prescribed in the preceding three articles.When interested parties of a collective agreement are in contravention of the stipulations that are not belong to Subparagraph 1 of Paragraph 1 to Article 12, the related provisions of the Civil Codes shall be applicable unless there are other stipulations in the collective agreement.