Wyoming,
From the HK government web site FAQs,
https://www.coronavirus.gov.hk/eng/i...faq.html#FAQ31
31. Are crew members exempted under Compulsory Quarantine of Persons Arriving at Hong Kong from Foreign Places Regulation?
The following categories of persons can be exempted from the quarantine requirement:- crew members of aircrafts (sic) who need to commute to and from foreign places for performance of necessary duties;
- crew members of goods vessels;
So in principle yes. Someone in the HR department of the company that you work for should have done this procedure before and knows what documents are required. I would think it would be more than a bit of paper with the company letter head on it. It might even help to arrive as a pax in uniform, but that is just a guess.