Well HR does that if u r outland and u need WP to continue postdoc in canada.....so in ur case initially, did HR sent u offer letter and also the employment # something with A#####....as that goes in WP application form, and when u apply for WP, CIC matches ur profile with posted LMIA application from employer side....so HR does that for sure for evrry lmia exemption offer
my offer letter doesn't show any employment number! as i received it while i am outland and the HR applied for my WP! got confused more now !!