Feeling blue at work? According to Keio University professor Takashi Maeno, there are science-backed reasons explaining why workers may feel so distressed.

Maeno, the dean of the Graduate School of System Design and Management at the university, has used a scientific approach to study psychological well-being. He said modern research has made it possible to learn about what conditions help people feel happy and how to improve workplace happiness.

¡°Since around the 1980s, researchers have discovered statistical methods to measure people¡¯s level of happiness,¡± he said during a recent interview with The Japan Times.