Your office is located on the edge of a beam swinging 38 stories over ground level. (We think you'll be fine. Less than 1 in 10 actuaries are actually killed on the job each year.)
In reality, all you have to worry about are the same things that can affect anyone in a sedentary position. Soreness in your neck and back, eye strain from staring at a screen all day, carpal tunnel from all the typing. However, since it's your job to assess risk, you have probably already invested in an ergonomic back pillow, an eye massager from Brookstone, and a typing robot you picked up from The Discovery Store.