Code of Professional Responsibility and Accountability (CPRA)
Section 42. Division of fees upon referral. - A lawyer shall, in case of referral of legal services in favor of another lawyer with the written informed consent of the client, be entitled to a division of fees in proportion to the work performed and responsibility assumed. Where a lawyer undertakes to complete unfinished legal business of a deceased lawyer, a division or sharing of fees is allowed with the deceased lawyer's legal heirs or estate.