As I understand it, the union does not support the centralization policy.
Casual employees are under a lot of pressure at tax data centres because of the quotas they have to meet. If these casual employees in the regions had contracts that better met their needs, they would be able to receive employment insurance. But that is not of interest to management. By employing fewer casual employees, those who were given contracts could accumulate more weeks worked and would thus be entitled to employment insurance.
Are you going to push for action with a view to improving this situation?