The Japanese suicide rate is still high compared with other countries. Worker suicide especially leads to marked social and economic losses and severely affects the bereaved. There is an urgent need to devise a system to prevent suicide at a very early stage. Generally, it is considered very difficult to intervene and prevent suicide in cases in which individuals kill themselves suddenly. However, according to some studies on suicide attempts, even those who killed themselves suddenly had experienced some kind of conflict or a desire to die for a long period. Therefore, it is essential to analyze the risk factors at an early stage when individuals have vague thoughts of suicide. This will help reduce the risk of suicide in such cases.
 In this article, I first survey the data related to workers' mental health in Japan. Second, I introduce the results of our pilot study in which we investigated mental health issues related to suicide among workers who have taken leave from work for more than two months. In this study, workers who do not exhibit help-seeking behavior are suggested to be a high-risk group for suicide. It is speculated that this behavior is related to several factors such as the sex, age, social status, education, personal stigma, and perceived stigma. Therefore, we must focus on both clinical and social solutions for the prevention of suicide. I believe that psychiatrists will come to play a more important role as liaisons between workplaces and social resources for the prevention of suicide.
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