The analysis from Cambridge’s Anglia Ruskin University will give every couple a reason to spend more time in bed, as if they needed one.
Economist Dr Nick Drydakis used data from 7,500 Greek people who took part in research about their sex lives and their jobs.
He found the more often a participant had sex, the more they were likely to earn.
The effects were especially pronounced for peopled aged between 26 and 50 and those with ongoing health problems.
His study, published in the International Journal of Manpower, says it’s because sexual activity can be seen as “a barometer for health, quality of life, well-being and happiness”.
He told The Telegraph: “The theory concludes that people need to love and be loved, sexually and non-sexually, by others.
“In the absence of these elements, people may become susceptible to loneliness, social anxiety and depression – all factors that can affect their working life.”
More sex or more money?