They need a job offer from an employer in Canada first. That employer must then obtain an approved LMO:
http://www.cic.gc.ca/english/work/employers/lmo-basics.asp
Once your friend has the job offer and approved LMO, the next step is to apply for a work permit. Processing times are here:
http://www.cic.gc.ca/english/information/times/temp/workers.asp