Kathy wrote:

Any competant contractor would be happy to have thier insurance
company mail and/or fax a certificate of insurance to you. Just
call the contractor and they will call the insurer and have it
sent. The certificate will list the contractors coverages and
companies as well as your address where the work will be done.
It's something they do everyday so don't think you are imposing
to phone up the contractor.

Yes,
But call the insuror yourself to be sure that he did not cancel the
insurance after he got the paperwork sent out.

That is a common move around here for the shade tree construction guys.