Concerns over employers using microtargeting to exclude some workers from seeing job ads based on age.

The Canadian and Ontario human rights commissions have taken the exceptional step of joining forces to urge Facebook to stop Canadian employers from being able to post job ads that discriminate against some workers on the basis of age.

In a letter sent to Kevin Chan, head of public policy for Facebook Canada, the two human rights watchdogs said they are concerned that the popular social media platform is allowing employers to violate federal and provincial human rights laws.