1. It would be ideal if time travelers could just disappear when they surf. Where do they go anyway, right? They aren't in this time period anymore. They're being propelled through time and space, for crying out loud! Take their body there too! But alas, no. When time travelers are called on to work, our bodies go limp, our eyes roll back into our heads, and we drool. A lot. While our mind is travelling, our body is comatose. If your boss wants you to work early, make sure he warns you so you get a chance to get away from any ledges and sit down.
2. Time travel causes extreme physical side effects. Nausea and diarrhea almost always occur once you land in a different time period. If you reach out of your cognitive roller coaster ride to explore the link between times, you will literally get burned. It burns your flesh.
3. Lastly, it's really irritating to keep having to explain to people who I am so they will just calm down already. For instance, yesterday I was called in to work on an emergency case while I was in my pajamas. When I showed up at the embassy in Tehran, it was 1979 and I was surrounded by frantic diplomats. In my pajamas. They were confused and angry and it took all my strength to not just leave them to their own defense. But I helped them and then erased their memories, like a good time traveler.
Sigh. Why didn't I major in Business?