The fact that their pattern of working was a repeating shift pattern was a product of that contractual relationship.

But their contractual relationship with their employers continued irrespective of where they were at any given time.

One could argue that such a procedure can benefit customers, protecting them from companies taking money out of their account long after some contractual relationship has ended.

You don't really do anything other than fight over the broken pieces of whatever contractual relationship was there in the first place.

They had no contractual relationship with the operators of websites accessed through their networks and were not necessarily in a position even to identify them.