Subject to human rights legislation and obtaining suitable consents, conducting pre-hire criminal background checks is common in Canada.
However, according to a
Globe and Mail article effective immediately, "baggage handlers, caterers and other airport workers will not merely
undergo standard criminal background checks through CPIC, the Canadian
Police Information Centre, they will face scrutiny under much more
obscure databanks, with names like PROS, ACIIS, and SPROS."
The
article goes on to note that:
The sweeping scope of the checks means that people who want to work
inside secure areas at Canadian airports will be scrutinized for
everything from past traffic accidents to links to criminal and
terrorist groups. Police can run searches for any warrants outstanding
in any of the 187 member countries that form Interpol.
The decision is, of course, fraught with employment and privacy questions.