To be clear; this is not a CX issue. This affects every pilot working in Hong Kong.
The CAD have now abolished Rostered Day Off Stability as custom and practice.
So it appears that TPE Flyers example is now officially accepted practice in Hong Kong too.
There's just one catch.
The HK Employment Ordinance forbids changing a workers day off without permission (except in emergencies).
So now we have the almost unbelievable scenario of the HKCAD championing unscrupulous employers rights to break the HKEO by abusing pilots rostered days off.
Gobsmacking.