Over 20 percent of public health care center staff in many of Japan's 47 prefectures suffered from overwork last year due to their duties in responding to the COVID-19 pandemic, reaching a level that could increase the risk of death, a survey by an umbrella organization of labor unions showed Thursday.The All-Japan Prefectural and Municipal Workers Union found in its survey that around 23 percent of the 1,771 respondents said their monthly overtime work was over 80 hours, considered a threshold that could raise the risk of "karoshi" or death from overwork.The latest results highlight the co…READ FULL ARTICLE