As a point of comparison - from the APC Cathay page.
-Pilots may take 15.5% retirement contribution as taxable cash salary instead
-Cathay covers 70% of international school fees for children, or 100% if they go to English Foundation School (a local and cheaper version of international school)
-Expat housing allowance (for direct entry second officer), first 2 years, is HKD24000/mo. (approx. USD3000) in addition to salary. From third year onward, HKD48000/mo. (approx. USD6000)
-Hong Kong housing allowance: SO 1st 24 months = HKD$252k, SO = HKD$360k/ year, FO = HKD$540k/ year, captain = HKD$780k/ year
Housing allowance goes directly for any rental or mortagage of properties in Hong Kong
-16% tax rate in Hong Kong
-Mandatory retirement age is 55