A. The plaintiffs and the designated street cleaners C, D, and E (hereinafter referred to as the "Plaintiffs") concluded a labor contract with the defendant and served as the street cleaners belonging to the defendant.

B. The Defendant, on June 15, 2001, stipulated the Directive No. 161, set forth the Regulations on the Management of Full-Time Human Resources other than Nutrition Quota, and abolished on October 12, 2007.

On October 12, 2007, the Defendant enacted the "Management Regulations for Nutrition Life Contract Workers and Fixed-term Workers (hereinafter "Management Regulations")" in accordance with the Directive No. 208 on October 12, 2007.

The provisions of each of the above provisions are as follows:

1) Article 3 (Scope and Scope of Application) (1) of the Regulations on the Management of Full-Time Human Resources other than Nutrition Quota refers to a full-time human resources falling under any of the following subparagraphs. 1. A full-time human resources shall include a full-time human resources for at least 300 days per annum (including all full-time human resources employed by law, municipal law, guidelines, etc.):

(2) Except for the human resources operated by the relevant Acts and subordinate statutes, such as the police assigned for special guard, among the full-time human resources, this provision shall apply mutatis mutandis. Article 10 (Service) (1) shall apply mutatis mutandis to the Ordinance on Service of Local Public Officials in Nutrition: Provided, That the provisions concerning the third leave shall not apply, but the Labor Standards Act shall apply. 2) Article 2 (Definitions) of the Regulations on Management of Nutrition and Contract Workers for Life

1. The term "inorganic contract worker" means a civilian who is not a public official under the Local Public Officials Act, but who enters into a military labor contract and works full-time with the military without fixing a working period;

Article 3 (Scope of Application) (1) Except as otherwise provided for in other Acts and subordinate statutes (including Municipal Ordinances and Municipal Rules) among matters concerning labor, service, etc. of workers, this provision shall apply.

(2) Workers subject to this Act shall be as follows:

1. On a weekly holiday set forth in Article 28 (Legal Holidays) of an inorganic Contract Worker as provided in subparagraph 1 of Article 2, as a weekly holiday, the Workers’ Day ( May 1).