Safety Bonus
Airlines in China often offer this every year, around US$ 6-8000.
However , what they dont tell guys is that there are dozens of reasons ( if not hundreds) that the company can give you for not paynig it, eg Not having your headset on throught the cruise or filling in every line of the flt plan/ fuel log. Its happened.
Point is, as is often the case in China, whats written isn't necessarily true, or close to the reality of day to day ops.