This happens unfortunately. A long term client feels they can...

This happens unfortunately. A long term client feels they can get a better deal by using one supplier rather than 3. Would have nothing to do with unions, just Rio changing the way they deal with suppliers. In another few years Rio might find they do better with multiple suppliers and change again. In the interim, Programmed can either find new jobs for their people (hard) or lose them to whoever is taking over supplying Rio.

Programmed might have no poaching clauses, so might be able to swing some sort of deal for current workers, but without detail hard to know full impact. Certainly won't be supplying future workers to Rio .