Liability insurance typically varies based on a number of factors specific to your business. The premium a company pays depends on its risk factors. Contacting insurers directly to receive a quote, or searching for liability insurers online would be the best way to find the premium your specific business would expect to pay.
No, Your homeowners Insurance does not provide coverage hired workers. A contractor is responsible for his own insurance policy or workman's compensation to cover injuries to himself and his employees. A contractor is not your employee and therefore not your responsibility, he is self employed.
Traditionally the contractor provides the Insurance. The owner verifies that the contractor has insurance prior to hiring that contractor.
You would need to buy a commercial auto policy.
Liability of individuals, corporations, or partnerships for accidents caused by people other than employees for whose acts or omissions the corporations or partnerships are responsible. This particular situation may arise when an independent contractor is hired. The business can be held liable for negligent acts of the contractor to the extent that its representatives give directions or exercise control over the contractor's employees.
The only answer one can give on this is 'it depends'. Usually it is more expensive than homeowners insurace, but less than workers compensation or liability insurance on a roofing contractor.
The job of a insurance contractor is to find you the best deal possible for your insurance needs. This could be anything from motorcycle to mobile home insurance.
Starting a small business is very expensive but you want to offer health insurance to your employees. You can also offer dental and eye-care insurance.
You should hire a licensed contractor. He should already have liability insurance and workmen's comp for his employees. If you do not hire a properly licensed contractor, all the liability for anything tha might go wrong falls on you. If your insurance company discovers that you hired an unlicensed contractor, they could, and probably will, deny payment on any claims you may file. Tread cautiously!
An insured contractor is a contractor who carries a Commercial General Liability Insurance Policy.
Ask the contractor for a copy.
The contractor should make a claim upon the sub-contractors insurance and/or bond. If the sub-contractor defrauded the contractor on having insurance and/or bonding in place then he should report the contractor to the State licensing board, file claim on their insurance, and civil lawsuit (if the insurance company does not directly file or pay).
There are several companies that offer IT contractor insurance. Hiscox, Markel UK, The Indemnity Brokers and Contractor UK are amongst the few that offer it.