It's galling to hear you say it's not a tax issue.
For the people affected, it is a tax issue, because it affects their living standard. They have mortgaged their house, and they have lost several years' worth of income because of this tax decision. So yes it is a taxation for those men and women who have worked extremely hard and who have always fully complied with the rules. It is in the interest of big employers to ensure that these people continue to be treated as employees. That is way that it has been interpreted in Quebec, and you are following it slavishly.
These workers are being left to pick up the pieces. Everything is always stacked against the employee and in favour of the employer. That is what is grossly unfair here and that is what I find so reprehensible. I appreciate that you do not have the final say on this issue, but I hope that given what you now know, you will report back that this situation is unfair. Thank you.