Due to rising retirement age, sustainable employability is gaining interest among employers. Such is the case in the meat processing industry. A strategy to address these challenges is health promotion at work. Therefore, the largest Dutch meat processing company has implemented a Workers’ Health Surveillance (WHS) program aimed at promotion of sustainable employability. By means of questionnaires, and physical and functional tests, insight was gained into workers’ current health and employability, and into future risks. However, it was unknown whether this approach, in combination with interventions, was effective. The WHS program was implemented at 4 company locations from 2012 until 2015 and 305 workers participated. A process evaluation...