It may sound obvious, but now it is official: a happy worker is a productive worker.
A University of Sheffield study looked at 42 UK companies and asked 5,000 people about job satisfaction.
The researchers asked workers about how many repetitive tasks they had to perform and the amount of freedom granted by their superiors.
They then compared this data with the firms' annual profits. This showed with striking clarity that the greater the individual employee's satisfaction, the higher the corporate rewards.
The link was prevalent in both white-collar and manual staffs.
The authors conclude that companies would make more money by varying workers' job duties and giving them greater autonomy.