Over 70 percent of nursing staff suffer from chronic fatigue, and 75.2 percent thought about quitting their job, according to a nationwide survey of workers in the nursing field.

The survey, conducted by the Japan Federation of Medical Workers' Unions, showed that the work environment and health conditions of nursing staff did not improve over the last five years, leading to a growing number leaving their jobs and contributing to a nationwide shortage.

In releasing the survey results Monday, the union said that over 60 percent of the workers said they were also worried about their health.