“…This is mainly due to the deterioration of the unemployment benefits provided by the UIFs in terms of coverage, eligibility and the right of re‐entitlement, making membership in a UIF less attractive and eroding the UIFs as a recruiting mechanism for their associated trade unions. Hence, research regarding the Ghent effect has often focused on either analysing the erosion of the system as a recruiting mechanism (Due and Steen Madsen, ; Kjellberg, 2006; 2009; Lind, 2004; 2009; Uusitalo and Bockerman, ), or measuring the Ghent effect compared with other factors known to contribute to a high union density in cross‐national studies (Ebbinghaus et al ., ; Schnabel and Wagner, 2003; 2005; Scruggs, ; Van Rie et al ., ; Western, ). But do all trade unions and professional organisations equally benefit from a Ghent effect across sectors, occupations and branches, or are some unions more dependent on the Ghent effect as a recruiting mechanism than others?…”