"One factor behind the lack of nursery teachers is the low salaries they earn. Nursery teachers make an average of 214,000 yen a month, 100,000 yen less than the average salary for all occupations. As a result, many qualified people do not work at day care centers, or quit after a short period of time."
Source:
Local govts tackle day care waiting list
July 30th 2013
Daily Yomiuri