a) In labour market equilibrium, the bargaining gap is zero, the price level is constant, and there is no unemployment. b) When unemployment is lower than equilibrium, workers' claims to real wages and firms' claims to real profits sum to less than total productivity. c) In the recession shown, both unemployment and inflation are higher than normal. d) In the recession and boom shown, claims on output are inconsistent, which results in the inflation rate deviating from zero