"And internationally, when you look at organisations that are single-focused, that means a big risk that if you don't bring in enough funding you lose all the intellectual property that you have and highly skilled staff and so on. So we felt there was a real benefit in us becoming part of a much larger organisation."
The agency dates back to 1976 when Christian and Jewish organisations founded what was then called the Inter-church Commission on Immigration and Refugee Resettlement. It is now an incorporated society whose members include churches, refugee communities and other social agencies.
Ms Hayden said the agency approached Red Cross about a takeover in mid-year because it already provided refugee resettlement services in many countries including Britain, Germany, France and Finland.
Red Cross did "due diligence" on the agency and agreed to take over. Members of the incorporated society then voted unanimously to dissolve the society and hand over its assets to the Red Cross.
Red Cross marketing manager Ross Cameron said there would be no change in service delivery to refugees but efficiencies would be achieved by Red Cross taking over "back-office" functions.
Immigration Minister Nathan Guy will unveil a new refugee resettlement strategy at the Mangere refugee centre on Tuesday.