Job tenure and unskilled workers before the Industrial Revolution: St Paul’s Cathedral 1672-1748

How were unskilled workers selected and hired in preindustrial labour markets? We exploit records from the rebuilding of St. Paul’s Cathedral, London (1672–1748) to analyze the hiring and employment history of over one thousand general building labourers, the benchmark category of ‘unskilled’ workers in long-run wage series. Despite volatile demand, St. Paul’s created a stable workforce by rewarding the tenure of long-standing workers. More senior workers received more days of work each month, preference when jobs were scarce, and the opportunity to earn additional income. We find the cathedral’s strategy consistent with reducing hiring frictions and turnover costs.