Explaining a short-term dip in chronic homelessness

A sociologist provides an explanation for the short-term dip in chronic homelessness in the United States:

Amid increases in poverty and unemployment, [the United States and Japan] have seen continuing decreases in street homelessness. The most recent Homeless Assessment Report to the U.S. Congress states that the chronically homeless, or those who have been on the streets or in shelters long-term and have disabilities, decreased by 10 percent from 2008 to 2009. The Japanese Ministry of Health, Labor and Welfare has reported a national decrease of street homelessness of 16 percent between 2009 and 2010…
While the provision of subsidized housing is crucial to get people off the streets, a lesser-known component in both nations has been the flexible, holistic and trust-building work of frontline staff persons at organizations linking people to and keeping them in housing.
This argument suggests that it is not just about providing resources (such as housing) to help reduce chronic homelessness but having staff help point them to and keep them using such resources.
I wonder how much data there is to back up this argument. Additionally, do governments see/acknowledge the value of these staff positions, particularly in lean economic times?