This paper examines cyclical variation in the effect of Fed policy on the stock market. We find a much stronger response of stock returns to unexpected changes in the federal funds target rate in recession and in tight credit market conditions. Using firm-level data, we also show that firms that face financial constraints are more affected by monetary shocks in tight credit conditions than the relatively unconstrained firms. Overall, the results are consistent with the credit channel of monetary policy transmission.

Standard estimates of the NAIRU or natural rate of unemployment are subject to considerable uncertainty. We show in this paper that using multiple indicators to extract an estimated NAIRU cuts in half uncertainty as measured by variance and gives a 33% reduction in the confidence band. The inclusion of an Okun's Law relation is particularly valuable. The essential notion is the existence of a common cyclical force driving the macroeconomic variables. Model comparisons based on the use of Bayes factors favor the idea of a common cyclical component.