02-039-410 Me. Code R. § 6
Written brokerage agreements must include a statement disclosing the real estate brokerage agency's policy on cooperating with and compensating other real estate brokerage agencies in the sale or purchase of real estate. If the real estate brokerage agency's policy is not to compensate all other real estate brokerage agencies in the same manner, this policy must be included in the statement and include a notice to the buyer or seller that this policy may limit the participation of other real estate brokerage agencies in the marketplace.
When a real estate brokerage agency's policy on paying commissions to its affiliated licensees provides for an incentive to an affiliated licensee for a greater commission for an in-house sale versus transactions involving a cooperating real estate brokerage agency, this policy must be disclosed in a written brokerage agreement with a buyer or seller.
02-039 C.M.R. ch. 410, § 6