①Notwithstanding the provisions of the preceding Article, if an employer has established, in a written agreement with the labor union that has been organized by a majority of the workers at the workplace, if there is one, or with a person representing a majority of the workers at that workplace, if there is no such union, or pursuant to rules of employment or the equivalent thereof, that the average weekly working hours over the course of a fixed period of not more than one month will not exceed the working hours referred to in paragraph (1) of the preceding Article, the employer, as established, may have a worker work in excess of the working hours set forth in paragraph (1) of the preceding Article in a specified week or weeks and may have a worker work in excess of the working hours set forth in paragraph (2) of the preceding Article on a specified day or days.

②An employer must notify the relevant government agency of the agreement set forth in the preceding paragraph, pursuant to the provisions of Order of the Ministry of Health, Labour and Welfare.