The current study investigated the relationship between workload and occupational stress among managers in manufacturing industries. Data were collected from 40 managers who were selected from Unilever, Goldstar Sugars, Astra Paints and Innscor. Survey questionnaires were used to collect data and these were administered to all selected managers with the aim of investigating the relationship between workload and occupational stress. Results of the study showed that workload is significantly related to occupational stress among managers. It also emanated from the study that workload contribute significantly to overall feelings of work-related stress and that work-related stress manifests itself psychologically, behaviourally, emotionally and physically.