More to follow..
http://www.esdc.gc.ca/eng/jobs/foreign_workers/higher_skilled/students/index.shtml
Effective immediately, the Department is ending the Recruitment and Advertisement Exemption for employers wishing to hire international students who have graduated from recognized Canadian post-secondary institutions and whose Post-Graduate Work Permit (PGWP) is expiring. Employers submitting a labour market opinion (LMO) to hire an individual transitioning from the PGWP must now ensure that they meet all of the Program requirements for the applicable stream: