This study extends Social Identity Theory by examining the link between Person-Organisation fit (POF) and Work Engagement (WE) through enhanced Job Satisfaction (JS) and testing it in a non-US environment. The study was conducted on a large sample (527) of Turkish blue and white-collar employees from business units of 15 independent companies; 10 different industry types. Data was analysed with Structural Equation Modelling. It was found that POF was positively related to WE, and secondly Job Satisfaction (JS) was (positively) related to WE. Results also showed that job satisfaction acted as a mediator between POF and WE and it mediated as high as 70 % of the effect of POFs. This study supports the research stream that JS was a predictor of work engagement. The results confirmed the applicability of Social Identity Theory in a Turkish context and advocates that employees who fit to organisation more are more likely to have job satisfaction and repay this to the organisation through higher levels of engagement.