The nation's largest business lobby recently released a report that it says shows the benefits that can come from allowing people to take on secondary employment. The lobby says second jobs can deliver a happier and more productive workforce while addressing some of the nation's demographic challenges.

The report compiled by the Japan Business Federation, also known as Keidanren, focused on the way increasing flexibility in allowing people to take on additional jobs can address labor shortages as well as dissatisfaction with the country's rigid corporate culture.

Although just 22% of about 500 companies in the country polled last year allow staff to take on second jobs, the report indicates a larger take-up of the arrangement could lead to people staying in the workforce for longer.