“…For example, a cross sectional study of around 14 000 healthcare workers in the US found that, although labour union membership remains low overall (13.2%), unionised healthcare workers had significantly higher reported weekly earnings ($1165 v $1042; mean difference, $123, 95% confidence interval $88 to $157, P<0.001) and better non-cash benefits than non-unionised workers. Furthermore, union membership protected against race based wage disparities in this sample 34…”