The current Act prescribes a selective work hours system, where working hours may be adjusted to the extent that the average work hours do not exceed 40 hours during an adjustment period of up to one month.
However, in IT and other businesses where, due to the nature of the industry, the workload varies substantially for different projects and employees, and it is not possible to predict the tasks performed in each period; the one-month adjustment period makes it difficult to effectively respond to market demand. Moreover, industry developments have resulted in a diversifying and continuously increasing variety of professional occupations and associated duties, and there has been ongoing criticism that it is necessary to supplement policies to increase the adjustment period for occupations requiring focused labor of one month or more.
Accordingly, the Amendment allows the one-month period for the selective work hours system to be extended to eight weeks (Article 52).
The Amendment also aims to prevent employees from overworking under the selective work hours system and protect their health by making it compulsory to administer special medical examinations when the selective work hours system is being adopted (Article 52, paragraph 2).

Prevent employees from overworking under the selective work hours system and protect their health by making it compulsory to administer special medical examinations when the selective work hours system is adopted (Article 52, paragraph 2).