Work-related disorders constitute a major occupational and public health issue in Japan, since the country has some of the longest working hours in the world. There are even cases of Japanese workers literally working themselves to death. In Japanese referred to as Karoshi, which can be translated as "overwork death".
In most cases, it is less severe than death, but working long hours does lead to serious health problems due to poor life-style choices, resulting in life-style diseases such as Chronic Obstructive Pulmonary Disease (COPD) or sleep apnea.
A reason for the Philips Foundation to organize and host these events by working closely with local governments in four prefectures (the main subdivisions of Japan): Sapporo, Yamanashi, Sendai and Okinawa. Each focusing on different health conditions that are less well known but can have significant impact on people's quality of life.