The Federal Reserve raised interest rates by another .75% last week, the latest in a series of rate hikes designed to tame inflation. The question looming over the economy now is whether the Fed has gone too far or not far enough. The answer depends on how much slack there is in the labor market. The Fed would like to see labor markets with enough slack that wage growth moderates to a level consistent with their 2% inflation target. But how do we assess the current degree of slack?