On many job applications even for government jobs there is a” voluntary " sectional "Self Identification" There is no obligation so there don't' be concerned.

Are you Male/ Female / Other?
Are you White / Aboriginal / Visible Minority?
Are you over 50 / under 50
Do you have any recognized handicaps or disabilities Yes/ No
Are you a born Canadian?

Its purely voluntary but if you don't volunteer you know your application will be rejected. The able bodied, but unfairly privileged 56-year-old white guy from Toronto looking to be a store clerk at the Bay, for the princely sum of $11.40 / hour, may as well apply for welfare.