I've been working as a contractor at a very large company. They seem to be very inefficient with their hourly employees; my boss hasn't spoken to me for the past 5 months. At the start, I had to approach him to get any kind of work to do or feedback on my performance; there is no proactive oversight. The full time employees seem too busy to help new people, or give feedback, or even make sure we're working. Perhaps the company makes so much money that overseeing contractors isn't an efficient use of time.
In any case, I'm seeking other employment and I'm wondering whether to give any notice at all. Nobody I "report" to has ever even asked to see my work. I don't have any work-handoff reasons to stay two weeks beyond putting in a resignation, but I don't want to burn a bridge with my employer by abruptly leaving.