This is a little disturbing.
I realize how this act exemplifies freedom, but I think it is unwise and improper for anyone to condone this activity. Think of this in perspective of a "leave no trace attitude". Sure, a single person hammocking on privately owned property does not seem to be all that intrusive. But what if everyone decided to live on another party's property without permission for an extended amount of time?
You may have gotten lucky doing it for one month. But for multiple months? Good luck. Hopefully your employer is kind enough to give you some sort of warning before terminating you. Otherwise, I could see them filing an easy civil suit against you and also face a possibility of criminal charges.
Be safe! You seem to have a future ahead of you where you won't have to worry about income, food, shelter, etc. I'd advise for you not to blow it for a few months savings when a future career is at stake.