In Spain it is also yearly. In general the annual salary is divided in 14 payments, unless you ask to have it divided by 12, depends on the employer, so it makes sense.
The income tax is also annual based. So depending how much you earned during the fiscal year you have a different tax rate. (And part of the income tax rate is dependent on the “state” but they are all more or less similar).
For me. 100% remote.
But I work more for objectives rather than gross time/days. If the project is falling behind I work extra to gain some safeguard. If the project is going well I work more relaxed.
I don’t mind working extra hours if I’m already saving a lot of time avoiding travelling to the client or going to the office, living in another place away from a city. Etc.