(1) The terms used in this Act are defined as follows: <Amended on Mar. 20, 2018; Jan. 15, 2019; May 26, 2020>
1. The term "employee" means a person, regardless of the kind of occupation, who offers labor to business or a workplace for the purpose of earning wages;
2. The term "employer" means a business owner, or a person responsible for the management of business, or a person who acts on behalf of a business owner with respect to matters relating to employees;
3. The term "work" means both mental work and physical work.
4. The term "labor contract" means a contract which is entered into in order that an employee offers work for which the employer pays its corresponding wages;
5. The term "wages" means wages, salary and any other kinds of money or valuables, regardless of their titles, which the employer pays to an employee as remuneration for work;
6. The term "average wages" means the amount calculated by dividing the total amount of wages paid to a relevant employee during three calendar months immediately before the day grounds for calculating his or her average wages occurred by the total number of calendar days during the three months. This shall apply mutatis mutandis to the employment of less than three months;
7. The term "one week" means seven days including holidays;
8. The term "contractual work hours" means work hours on which employees and their employer have made an agreement within the limit of work hours under Article 50 or the main clause of Article 69 of this Act, or under Article 139 (1) of the Occupational Safety and Health Act;
9. The term "part-time employee" means an employee whose contractual work hours per week are shorter than those of a full-time employee engaged in the same kind of work at the workplace concerned.
(2) When the amount calculated pursuant to paragraph (1) 6 is lower than that of the ordinary wages of the employee concerned, the amount of the ordinary wages shall be deemed his or her average wages.