1. All appeals filed by the plaintiffs are dismissed.

2. The costs of appeal are assessed against the Plaintiffs.

The purport of the claim and appeal is the purport of the appeal.

1. Basic facts

A. The Defendant Company is a company running urban bus transportation business with 116 full-time workers who receive financial support from Incheon Metropolitan City pursuant to the Incheon Metropolitan City City Urban bus completion management system (hereinafter “In Mancheon-si System”). Plaintiff A, B, D, and E are temporary employees; Plaintiff C is employed by the Defendant Company as the commissioned worker after retirement from office; Plaintiff C was employed by the Defendant Company after the retirement from office; and Plaintiff C was employed by the Defendant Company during the first half of 2012 as a new employment contract (hereinafter “instant employment contract”) between Plaintiff, B, D, and E from June 1, 2012 to the “Class II driver”; and Plaintiff C is a driving engineer who works as the “commissioned Officer”.

B. On June 29, 2011, the Incheon Metropolitan City Bus Transport Business Association (hereinafter referred to as the “Macheon Bus Business Association”) concluded a collective agreement in 2011 (hereinafter referred to as the “instant collective agreement”) and the wage agreement in 2011 (hereinafter referred to as the “instant wage agreement”) with the National Automobile Labor Union of Incheon (hereinafter referred to as the “Macheon Bus Labor Union”) respectively. The main contents of the instant collective agreement and the instant wage agreement are as shown in the attached Table.

C. The bus companies affiliated with the Incheon Bus Trade Association are individually subject to the instant collective agreement and the instant wage agreements by concluding a supplementary agreement with the relevant bus companies' branch offices affiliated with the Incheon Bus Trade Union and the said trade union. The Defendant Company, on May 31, 2012, applies the instant collective agreement and the instant wage agreements with respect to the overall labor conditions, etc. of the Defendant Company between the Incheon Bus Trade Union and the Defendant Company’s branch offices, etc. on the basis that the period of execution and the term of validity are limited from June 1, 2012 to July 31, 2012 (hereinafter “instant supplementary agreement”). Thus, the instant collective agreement and the instant wage agreement were subject to the application.