Dear jingi let me explain this to you. There is no need to be worried. On January 31, 2012 some NOCs had changed and during that time they announced they consider applicants with both NOCs' description, older or new one. Thus, every one who had already applied during that time and even their work experience letters were based on the previous NOCs description were eligible too, but this year they will probably just accept reference letter based on the new NOC, which is not a big problem because everyone can asks their employers to write their job reference letters based on the new one. However, you should consider the fact that not all of the NOC codes are changed, but just few of them. You could see the affected ones from 29 eligible occupation list on that page, and your NOC is not one of them!
233 Insurance Adjusters and Claims Examiners 1312 Insurance Adjusters and Claims Examiners
6241 Chefs 6321 Chefs
6242 Cooks 6322 Cooks
7215 Contractors and Supervisors, Carpentry Trades 7204 Contractors and Supervisors, Carpentry Trades
7216 Contractors and Supervisors, Mechanic Trades 7301 Contractors and Supervisors, Mechanic Trades
7265 Welders and Related Machine Operators 7237 Welders and Related Machine Operators
0811 Primary Production Managers 0811 Managers in Natural Resources Production and Fishing
8222 Supervisors, Oil and Gas Drilling and Services 8222 Contractors and Supervisors, Oil and Gas Drilling and Services
3152 Registered Nurses 3012 Registered Nurses and Registered Psychiatric Nurses - cap filled since July 19, 2011
1122 Professional Occupations in Business... 1122 Professional Occupations in Business Management Consulting - cap filled since July 11, 2011
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