This is an investiture agreement pact between the leading PSOE and its partner Sumar, with PSOE’s leader Pedro Sanchez being expected to be re-elected prime minister by the Parliament this month, meaning that, while there is a relatively clear agreement that these parties are about to continue leading the government and have the intention of passing this reform, it’ll take a while to be a reality.
For a working culture where being at the office is important, it’s an major step. We call it “seat warming”, and sometimes it’s a big factor to get a promotion. I know people who got promoted by just being at the office to late hours doing nothing. Maybe this step can convince higher ups that just being there warming your seat is worse than having a good work/home balance, and that productivity won’t get hurt by leaving a bit early.