Lovegod this should answer most of your questions;
SCMP 2nd August by Victoria Button
No problem with new rosters: airline
Cathay yesterday claimed the introduction of its new roster practices had gone smoothly. However, while flights departed as normal, company data conspicuously failed to show large-scale acceptance by pilots of individual company offers on rostering.
More than 1,255 pilots returned standard union letters rejecting the offers on Tuesday.
Cathay refused to say how many pilots had filled in company forms asking them to nominate an overtime payment scheme, but provided other figures.
On the basis of these, fewer than 300 pilots had demonstrably filled in the company form - the 47 who chose to stay on the current overtime payment scheme and 239 who chose to start a new one immediately.
However, 1,275 pilots would start on the new payments next birthday, Cathay said.
Those who responded with union letters rejecting the deal were put in the birthday category - as were those who returned no preference.
http://hongkong.scmp.com/ZZZQVGB5RPC.html