Green, CPA, has been approached by Dewy Cheetum, an attorney, to act as an expert witness on one of Mr Cheetum\'s cases. Mr Cheetum\'s fee will be of his client\'s award, should his client prevail. Mr Cheetum wishes to pay Green of his client\'s award, if the client should prevail. May Green accept this fee arrangement? Yes, provided that neither Mr Cheetum nor his client are attest clients of Green. No because only tax audit work may be performed for a contingent fee. No because contingent fees are not allowed in California. No because expert witness work may not be performed for a contingent fee.