A. The relationship 1) The Defendant is a company that engages in insurance business under the Insurance Business Act, and the Defendant is a company that engages in green damage insurance business under the Financial Services Commission’s decision to transfer contracts on May 3, 2013 (hereinafter “green damage insurance”).

(2) On May 3, 2013, the Plaintiffs, who were the employees of the Green Damage Insurance, began to work in the form of re-admission to the Defendant on the same day after withdrawal from the Green Damage Insurance.

B. The wage payment system and the Plaintiffs’ class 1) from around 1998 to around 30, the Green Damage Insurance paid wages by means of annual salary system for workers of Grade IV or lower, and by means of salary salary system for workers of Grade IV or lower. Except for the year 2009, the Defendant paid 2% of monthly wages to workers of Grade I or III as salary grade for workers of Grade III or higher as in the green damage insurance. 2) The Defendant paid wages by means of annual salary system for workers of Grade III or lower as in the green damage insurance, and by means of salary system for workers of Grade IV or lower as in the annual salary system, and the Plaintiffs are workers of Grade I or III subject to the annual salary system.

C. 1) During the period from April 1, 2012 to April 30, 2013, the Green Damage Insurance did not pay an amount in the name of the above salary class increase between April 1, 2012 and April 30, 2013. Of the plaintiffs, the Green Damage Insurance was declared bankrupt on November 1, 2013 by the Seoul Central District Court 2013Hahap166, and the trustee in bankruptcy took over the lawsuit prior to the lawsuit by the Korea Deposit Insurance Corporation. The Seoul Central District Court (2) filed a lawsuit claiming an unpaid retirement allowance based on the average wage calculated by adding the unpaid salary and the salary class to the unpaid salary class increase. 2) On August 28, 2014, the Seoul Central District Court (2013Da47687) reported that there was a labor-management practice that pays monthly salary class 2 to class 1 or 3 workers as the salary class increase between Green Damage Insurance and class 3 workers.