The unionized share of the work force changed markedly in the United Kingdom between the 1970s and 1980s. In the 1970s density rose steadily, making the United Kingdom the most heavily organized large OECD country. In the 1980s, by contrast, density fell by 1.4 percentage points per annum -- a...

British Master and Servant law made employee contract breach a criminal offense until 1875. We develop a contracting model generating equilibrium contract breach and prosecutions, then exploit exogenous changes in output prices to examine the effects of labor demand shocks on prosecutions....