They would call me on the weekend to do a LOCUS (it is a score), and I would do it, while I am by the pool, because it was interesting, and I thought that is how it goes in this country.
I used to work until morning,
sometimes the owners would come back to the office by accident,
and they will find find me there working.
I never ever worked 8 hours, but always more.
today I did not go to work, because i had deadline work, and I know I can only do it from home, because there is always a "party" and distraction at work. I did that many times, when we had too much work.
My brother told me a year ago: if you go to work and push papers from left to right- that is work, regardless, if you make nothing for the company.
if you work from home, they do not appreciate it, because "you are not at work".
Sounds like they're taking advantage of you. I agree with Chriza's Girl, though, I think you should talk to them before you quit.