Your first comic was the best.
/comics/The_Office/542349/
Accurate, self-aware humor. But then it starts to go downhill:
/comics/The_Office/542355/
What's the joke here? Where's the punchline?
This one is kind of funny:
/comics/The_Office/542356/
Stickman's transparent fakery and Brad's callous lack of concern both go against our expectations and make Stickman the butt of a joke.
But then, a couple of comics later, we get this:
/comics/The_Office/542358/
The first two panels have nothing to do with the third, and they're not funny by themselves. They don't do anything except establish continuity with the preceding comics. Continuity is fine, but it isn't funny by itself. Omit any events in your characters' lives that don't contribute to the humor. A good writer will be able to do this without making the story seem disjointed. If the events aren't important, just don't mention them. If they are, the characters can refer to them briefly.
The third panel in that comic is no great shakes, either. I'm not telling you not to make jokes about rape. But, despite what a lot of people around here seem to think, the phrase "I intend to rape you and it will be unpleasant", or any variation thereof, does not, by itself, constitute a joke.
/comics/The_Office/542540/
What the fuck is going on in this one? There's no context and no punchline. Randomness is not inherently funny. It might be when you encounter it in real life, but when you're composing something that's intended to be funny -- a comic, a movie, a stand-up act, whatever -- the standards are higher.
You seem like a reasonable human being. I believe that you have the potential to make funny comics, and I hope that you will realize that potential. But right now, I'm not giving your comics a lot of "good" votes.