Apologies Act 2023 (Act 13 of 2023): Singapore's primary legislation governing apologies, which establishes that apologies do not constitute admission of fault/liability and protects apology statements in civil proceedings. The Act aims to facilitate dispute resolution without litigation.

Evidence Act 1893 (Chapter 97): Governs how the apology acceptance letter might be treated as evidence in legal proceedings, particularly relevant if the matter later proceeds to litigation.

Limitation Act 1959 (Chapter 163): Establishes time limitations for underlying claims. Important because accepting an apology doesn't necessarily waive legal rights under Singapore law.

Civil Law Act (Chapter 43): Contains general contract law principles that may apply to the apology acceptance letter, including considerations of whether the acceptance creates binding obligations.

Electronic Transactions Act (Chapter 88): Governs electronic execution of documents and ensures legal recognition of electronic signatures, relevant if the apology acceptance letter is to be executed electronically.