In many developing countries, lower-level employees are working in workplaces that pay them poverty wages. The need for workers to earn a living wage has long been argued, both within the trade union movement, employers and society, along with the link with job satisfaction and employee engagement. The present study aims to explore the relationship between living wage, job satisfaction and employee engagement, as well as union membership as a moderator in these relationships. A quantitative research approach was employed in this study, and Loess curves were used to graphically predict the relationship between study variables. There were significant relationships between a living wage, job satisfaction and employee engagement. The results indicated that the relationships between the variables were cubic and not linear. Union membership was the moderator in the relationship between living wages and employee involvement. Union membership moderated the cubic relationship between living wages and employee engagement. Union membership also moderated the cubic relationship between living wages and job satisfaction.