If you use the asiaxpat site, make sure you speak to past employers even if they are no longer in HK and it is difficult to track them down. We hired our helper from asiaxpat, but she turned out not to have the skills/qualifications/experience she claimed. We did not speak to the previous employer (they had relocated). We terminated after 2 months and she is back on asiaxpat claiming to have new skills and qualifications and longer past contracts. Our fault for not tracking down the previous employer perhaps, or for being too trusting...