The wife of Tomoo Oizumi is seen holding her husband's car keys, which she carries with her as an amulet, on Nov.... Tomoo Oizumi had put in 123 hours of overtime work in the month prior to his death.... Five days prior to his death, the man was questioned severely by a boss about some wrongdoing he wasn't involved in, which the Matsumoto Labor Standards Inspection Office in Nagano Prefecture pointed out could have triggered his suicide....