Amid a surge in nonregular workers, the welfare ministry on Thursday proposed drastically easing the current rigid requirement for child care leave that prevents many mothers from returning to the workforce.

The proposal, made to labor policy experts, was unveiled Thursday during a meeting of the Labor Policy Council and comes amid mounting calls to improve the treatment of nonregular workers.

Internal affairs ministry statistics show such workers constitute nearly 40 percent of the total workforce and 60 percent of all female employees.