TrPA up to 4 times per month reduced the intensity of neck and shoulder pain (katakori) by 20% and improved labor productivity (relative presenteeism value) by 0.25 compared with the notreatment control group over a 1-month period. Moreover, the difference in labor losses incurred by companies due to neck and shoulder pain (katakori) was revealed to be JPY 756 065 per female worker per year.