I went to the CA Contractors State License Board to check this contractor's bond/insurance status. It seems he works by himself. The CSLB page shows "This licensee is exempt from having workers compensation insurance; they certified that they have no employees at this time." Is it my responsibility to make sure that he has insurance to cover his own injury? Or can I assume that he is a licensed contractor, he is required to have his own insurance? Thank you for your advise.