“…Obviously, therefore, CPS data are not useful in exploring the microeconomic effects of living wages at the firm or establishment leveli.e., questions such as whether firms engage in substitution away from low-wage labor, how much wages are increased for their lowest-wage workers, how employment responds, whether turnover falls, etc. Such questions are best addressed using direct survey data on covered employers (and ideally a control group of uncovered or unaffected employers), as has begun to occur in some recent research (e.g., Brenner, 2003;Fairris, 2003). On the other hand, the CPS data are very useful (and perhaps the best data available at present) for addressing policy questions regarding the effects of living wages on low-wage workers and low-income families, because they permit us to estimate the net effects (including indirect or perhaps "general equilibrium" effects) of living wage laws on workers and families in the cities where they are passed, relative to other cities.…”