A shortened working week without lower pay.

Already last year, the Spanish government launched a pilot project that tests how productivity is affected by employees working fewer hours a week.

SVT's European correspondent David Boati has met Marta Iglesias, who works for one of the companies that has implemented a four-day work week.

She now works more efficiently and with a more positive attitude – and also has more free time to devote to her hobby.

- It feels great, she says.

According to the HR department at Marta Iglesia's workplace, a shorter work week does not seem to reduce the employees' ability to perform well.

- We are completely satisfied.

87 percent of all respondents feel more at ease today, says Coral Alcaraz, HR manager.

Tested for two years

The project is to be tested for two years by small and medium-sized companies.

The aim is to produce labor reforms that can "generate an increase in productivity that offsets wage costs," Spain's labor market ministry noted last year.

While the unions view a shorter working week positively, business expresses skepticism.

See how it has worked for Marta Iglesias and the clothing company to work based on a shorter work week in the clip above.