How exactly does workman's Comp insurance work. I was going to have a tree removed, but the company didn't have workman's comp., only liability insurance so I decided to look elsewhere. If an accident occurred on my property and someone was injured am I the responsible party or does it fall on the owner of the tree company. Also, would my liability insurance cover it or would they deny based on the grounds that I didn't hire a company with WC insurance. I carry a policy for my business for when I hire labor and contractors, but it won't cover me personally. How much does WC add to the cost of a tree job. The first guy wanted $3,000 to remove the 120 foot Hickory in my back yard, but he didn't have WC. Any idea how much more expensive it would be from a company with WC based on the same $3,000 price...thanks in advance for your input.