“…In general, non-financial corporations can become financialised by either increasing their corporate debt ratios (either to fund share buy-backs or invest) or by becoming listed on the stock market and thus focused on maximising shareholder returns. The following two hypotheses are derived from this: Hypothesis 6: Increased corporate debt ratios will be negatively associated with union density Hypothesis 7: Increased exposure of non-financial corporations to stock markets will be negatively associated with union density A number of econometric studies have demonstrated that the growth of the so-called FIRE sector 4 (Finance, insurance, and real estate) relative to the real economy, employment in financial intermediation and the FIRE sector, as well as corporate debt, financial openness, and stock market price fluctuations are strongly associated with the decline of unionisation rates and union power in a wide range of advanced economies over the past five decades (Darcillon, 2015;Dupuis et al, 2020;Kollmeyer and Peters, 2019;Meyer, 2019;Mohamed and Darcillon, 2023;Peters, 2011). In a study that is more focused on financialisation in EU countries, Vachon et al (2016) show that financialisation measured in terms of employment in the FIRE sector has contributed to the reduction in union density in the EU since 1981, given that workers in finance and insurance are rarely unionised.…”