In every contract there is an implied covenant, a promise, that the parties will act in good faith and deal fairly with each other. A Standard Clause providing model language to plead a claim for breach of the implied covenant (or duty) of good faith and fair dealing under Massachusetts law.UCC Section 1-203 provides: "Every contract or duty within the Act imposes an obligation of good faith in its performance or enforcement. "Under Massachusetts law, every contract implies good faith and fair dealing between the parties to it. …. The writing shall be certified as made in good faith. This duty requires that neither party will do anything that will destroy or injure the right of the other party to receive the benefits of the contract. Instead, the law holds that there are implied duties to cover situations not discussed in the written contract. UCC Section 2306(2) and its related Comment 5 use "best efforts" interchangeably with "good faith and reasonable diligence. Acting in good faith means you will be honest in upholding your end of the contract and not stand in the way of the success of the other party. All bidders must sign and submit with their bid the attached Certificate of Good Faith and Tax Compliance Form.