Construction and site based work carries the sharpest exposure. Under the Employees' Compensation Ordinance (Cap. 282) a principal who sublets work can be made liable for compensation to a subcontractor's employees, and the courts have used the Poon Chau Nam indicia to find that a supposedly self-employed worker was employed. Check insurance and site registration before day one.
Creative, editorial and software work turns on ownership. Because Cap. 528 leaves first ownership with the author of a commissioned work, a client without a written assignment holds only an exclusive licence for purposes the parties contemplated. That is thin protection when the client later wants to sublicense or resell the asset.
Platform and delivery operations now sit against a developed body of local authority. The distance between the Zeek and Deliveroo outcomes was operational: fixed routes, monitoring and a ban on substitutes on one side, freedom to log off and a real delegation right on the other. Audit the app, not only the contract.
Regulated financial services allow far less flexibility. An individual carrying out a regulated activity must be licensed by the Securities and Futures Commission and accredited to the licensed corporation under the Securities and Futures Ordinance (Cap. 571), whatever the contract calls them.
Non-resident suppliers raise immigration points first. A person on an employment visa is tied to the sponsoring employer and cannot lawfully take freelance work on the side. Corporate suppliers engaged from overseas are usually better served by a master services agreement drafted for Hong Kong.