Physical Danger
For the most part, all an actuary has 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.
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However, since it's your job to assess risk, you've probably already invested in an ergonomic back pillow, an eye massager from Brookstone, and a typing robot you picked up from The Discovery Store. If anyone has a good shot at coming out of their career unscathed, it's you.