【勞工法例-最低工資條例"計算最低工資的基本原則"常見問題】僱主與僱員是否可以自行協議讓僱員收取低於最低工資的工資 (Can an employer and an employee mutually agree that the latter is to be paid less than

​任何僱傭合約的條文，如有終止或減少《最低工資條例》所賦予僱員的權利、利益或保障的含意，即屬無效。因此，僱主與僱員不能藉協議減少僱員享有法定最低工資的權益。

​Any provision of a contract of employment that purports to extinguish or reduce any right, benefit or protection conferred on the employee by the Minimum Wage Ordinance shall be void. In other words, an employer and an employee cannot by agreement reduce the employee’s entitlement to SMW.

https://www.labour.gov.hk/tc/faq/smw_basic_principles.htm