Yahoo Japan Corp. is considering introducing a four-day workweek for all its 5,800 employees, sources have revealed.

The subsidiary of SoftBank Group Corp. plans to implement the system in stages over several years, but wages under the new system have not been determined, the sources said Saturday.

The system is being studied as part of an effort to ensure the hiring of competent personnel and prevent employees from quitting in order to care for ailing parents, they said.

Beginning in October, Yahoo Japan also plans to provide a commutation allowance of up to ¥150,000 a month to enable employees living in distant places to commute via bullet train.

The internet search engine operator will also allow employees to work from home up to five days a month from October, compared to the two days a month currently allowed.