“With the four-day work week, 32 hours, we’re launching into the real debate of our times."
Mr Errejón added: "Spain is one of the countries where workers put in more hours than the European average.
"But we're not among the most productive countries.
"I maintain that working more hours does not mean working better."
Spain is to trial a four day working week (Image: GETTY)
Across the world, from New Zealand to Germany, the idea has been steadily gaining popularity.
Proponents of the idea said it would increase productivity, improve mental health and fight climate change.
The concept has gained popularity after the coronavirus pandemic has brought into focus ideas around wellbeing, burnout and the work-life balance.