N.J. Ct. R. app 3 R. R. 1.8

As amended through September 12, 2022
Rule 1.8 - Conflict of Interest: Current Clients; Specific Rules
(a) A lawyer shall not enter into a business transaction with a client or knowingly acquire an ownership, possessory, security or other pecuniary interest adverse to a client unless:
(1) the transaction and terms in which the lawyer acquires the interest are fair and reasonable to the client and are fully disclosed and transmitted in writing to the client in a manner that can be understood by the client;
(2) the client is advised in writing of the desirability of seeking and is given a reasonable opportunity to seek the advice of independent legal counsel of the client's choice concerning the transaction; and
(3) the client gives informed consent, in a writing signed by the client, to the essential terms of the transaction and the lawyer's role in the transaction, including whether the lawyer is representing the client in the transaction.
(b) Except as permitted or required by these rules, a lawyer shall not use information relating to representation of a client to the disadvantage of the client unless the client after full disclosure and consultation, gives informed consent.
(c) A lawyer shall not solicit any substantial gift from a client, including a testamentary gift, or prepare on behalf of a client an instrument giving the lawyer or a person related to the lawyer any substantial gift unless the lawyer or other recipient of the gift is related to the client. For purposes of this paragraph, related persons include a spouse, child, grandchild, parent, grandparent, or other relative or individual with whom the lawyer or the client maintains a close, familial relationship.
(d) Prior to the conclusion of representation of a client, a lawyer shall not make or negotiate an agreement giving the lawyer literary or media rights to a portrayal or account based in substantial part on information relating to the representation.
(e) A lawyer shall not provide financial assistance to a client in connection with pending or contemplated litigation, except that:
(1) a lawyer may advance court costs and expenses of litigation, the repayment of which may be contingent on the outcome of the matter; and
(2) a lawyer representing an indigent client may pay court costs and expenses of litigation on behalf of the client; and
(3) a legal services or public interest organization, a law school clinical or pro bono program, or an attorney providing qualifying pro bono service as defined in R. 1:21-11(a), may provide financial assistance to indigent clients whom the organization, program, or attorney is representing without fee.
(f) A lawyer shall not accept compensation for representing a client from one other than the client unless:
(1) the client gives informed consent;
(2) there is no interference with the lawyer's independence of professional judgment or with the lawyer-client relationship; and
(3) information relating to representation of a client is protected as required by RPC 1.6.
(g) A lawyer who represents two or more clients shall not participate in making an aggregate settlement of the claims of or against the clients, or in a criminal case an aggregated agreement as to guilty or no contest pleas, unless each client gives informed consent after a consultation that shall include disclosure of the existence and nature of all the claims or pleas involved and of the participation of each person in the settlement.
(h) A lawyer shall not:
(1) make an agreement prospectively limiting the lawyer's liability to a client for malpractice unless the client fails to act in accordance with the lawyer's advice and the lawyer nevertheless continues to represent the client at the client's request. Notwithstanding the existence of those two conditions, the lawyer shall not make such an agreement unless permitted by law and the client is independently represented in making the agreement; or
(2) settle a claim or potential claim for such liability with an unrepresented client or former client unless that person is advised in writing of the desirability of seeking and is given a reasonable opportunity to seek the advise of independent legal counsel in connection therewith.
(i) A lawyer shall not acquire a proprietary interest in the cause of action or subject matter of litigation the lawyer is conducting for a client, except that the lawyer may:
(1) acquire a lien granted by law to secure the lawyer's fee or expenses,
(2) contract with a client for a reasonable contingent fee in a civil case.
(j) While lawyers are associated in a firm, a prohibition in the foregoing paragraphs (a) through (i) that applies to any one of them shall apply to all of them.
(k) A lawyer employed by a public entity, either as a lawyer or in some other role, shall not undertake the representation of another client if the representation presents a substantial risk that the lawyer's responsibilities to the public entity would limit the lawyer's ability to provide independent advice or diligent and competent representation to either the public entity or the client.
(l) A public entity cannot consent to a representation otherwise prohibited by this Rule.

N.J. Ct. R. app 3 R. R. 1.8

Adopted September 10, 1984 to be effective immediately; paragraph (e) amended July 12, 2002 to be effective 9/3/2002; caption amended, paragraphs (a), (b), (c), (f), (g), (h) amended, former paragraph (i) deleted, former paragraph (j) redesignated as paragraph (i), former paragraph (k) deleted, and new paragraphs (j) , (k) and (l) added November 17, 2003 to be effective 1/1/2004; subparagraph (e)(3) amended July 22, 2014 to be effective 1/1/2015.