Sec. 3148.

(1) An attorney is entitled to a reasonable fee for advising and representing a claimant in an action for personal or property protection insurance benefits which are overdue. The attorney's fee shall be a charge against the insurer in addition to the benefits recovered, if the court finds that the insurer unreasonably refused to pay the claim or unreasonably delayed in making proper payment.

(2) An insurer may be allowed by a court an award of a reasonable sum against a claimant as an attorney's fee for the insurer's attorney in defense against a claim that was in some respect fraudulent or so excessive as to have no reasonable foundation. To the extent that personal or property protection insurance benefits are then due or thereafter come due to the claimant because of loss resulting from the injury on which the claim is based, such a fee may be treated as an offset against such benefits; also, judgment may be entered against the claimant for any amount of a fee awarded against him and not offset in this way or otherwise paid.