Story highlights One survey found that South Korea has the third-highest number of hours worked

Mexico worked most, with an average of 2,257 hours in 2017

The average person in Germany worked the least, at 1,356 hours in 2017

(CNN) South Korea has lowered its maximum working hours from 68 hours a week to 52 hours. The legislation, which went into effect Sunday, received overwhelming support in the National Assembly in an effort to limit the time employees spend on the job..

countries tracked by th South Korea has the third highest number of hours worked of 37countries tracked by th e Organisation for Economic Co-operation and Development , with the average person in South Korea working about 2,024 hours in 2017, or approximately 38.9 hours a week.

Mexico clocked the most time on the job with an average of 2,257 hours (about 43.4 hours a week) in 2017, and Costa Rica worked the second most with 2,179 hours (41.9 hours a week). On the other end of the spectrum, Germany and Denmark worked the least, with an average of 1,356 and 1,408 hours, respectively, in 2017, or 26 and 27 hours a week.

"Enforcement will be interesting," Ellen Kossek, a professor of management at the Purdue University Krannert School of Management, said of South Korea. "I think it's a good move in the right direction. I do know that they're very worried about declining fertility rates as an economic problem. They're also worried about health."

The law first requires implementation by companies with more than 300 employees. Smaller companies must do so in 2020 and 2021.

Read More