1. Key Minimum Employment RightsThe principal statute regulating the work relationship is the Employment Ordinance. Many benefits and protections under the ordinance are available only to "continuous employees"—workers who are employed under a continuous contract. A continuous employee must have worked for the same employer for at least four consecutive weeks and at least 18 hours each week.2. The Employment ContractIn Hong Kong, employment contracts can be for an open term—that is, permanent—or a fixed term. If the period is not specified in the contract, it will be deemed to be a contract for one month, renewable from month to month once the employee has worked for at least 18 hours per week for a continuous period of four weeks.The use of agency workers is not as common in Hong Kong as in certain other jurisdictions in Asia, partly due to the relative ease with which employers can terminate employment in Hong Kong./.....
Full list here: https://www.shrm.org/ResourcesAndTools/legal-and-compliance/employment-law/Pages/global-Hong-Kong-employment-law-overview.aspx