Yes. In fact on page 240 of the budget--not too many people got that far--we see, roughly speaking, that a dollar spent on support for low-income generally, which could include EI and other items such as the WITB, in the first year generates about 80ยข in additional activity. In the second year it generates $1.50 in incremental activity. That is roughly similar to what one finds the impact is for infrastructure.
On April 21st, 2009. See this statement in context.