Are you allowed to work in Hong Kong? Work Permits explained.
Work visas are a requirement for anyone who wants to go to Hong Kong for a job.
An application for a work/entry visa are more likely to be granted if the applicant:
Has no criminal record and has never been considered a security risk
Has a good education level in the field in which they are applying for work or similar work experience
Has a written genuine confirmed offer of work that cannot be easily carried out by a Chinese/Hong Kong National
The remuneration package is similar to that which would be expected for a local worker doing a similar job
Or they are in a position to substantially help the economy of Hong Kong
It also helps if you are financially buoyant enough to support yourself for your entire stay.
For more detailed information on how to apply for a visa please visit the Hong Kong Immigration department website - http://www.immd.gov.hk/en/services/hk-visas/professional-employment/guidebook.html