No, I don't think so. If I understand correctly, it's purely for operational reasons.
I'd like to clarify that all the documents are paper documents, handled by a company called Recall. I can do some checking and get back to you with a more detailed answer on the subject.
My understanding is that the Agency uses subcontracting so it can realize economies of scale. The Agency has more than 100 sites in Canada where documents can be retained. The retention of all these documents within a single organization calls for rather impressive record management technology, and the documents must be locatable in boxes using bar codes. Rather than invest in these kinds of technologies in its numerous centres, I suspect the agency uses subcontracting primarily for efficiency and economies of scale.