Here is the list of top 5 highest paying skills in Canada. Below is average pay for this profession ( not the starting wage ):

Plumber
NOC Code : 72300
Avg. Wage : CAD $101,376/year

Industrial Mechanic/Millwright
NOC Code : 72400
Avg. Wage : CAD $91,584/year

Welder
NOC Code : 72106
Avg. Wage : CAD $95,235/year

Powerline Technician
NOC Code : 22310
Avg. Wage : CAD $84,708/year

Refrigerator & AC Mechanic
NOC Code : 72402
Avg. Wage : CAD $80,495/year