Background: Health is multifactorial and every individual’s biological makeup influences health through interaction with social and physical environments as well as behavior. In thermal power station different groups of employees are exposed to different working conditions and environmental factors at their work place in turn making them prone to various health hazards and succumbing to habits detrimental to their general and oral health. Objective: To assess the oral hygiene status and practices. Methods: A total of 294 thermal power plant workers were enrolled in the study. Data was collected using “WHO oral health proforma 2013”. Intra oral examination and tobacco habits were recorded. Intra examiner reliability was 0.84-kappa value. Results: Caries experience was found to be (46.3%) with a mean DMFT of 1.09±1.74. About 9% study subjects were with untreated dental caries and 15.6% subjects were with missing teeth. 40.4% subjects were having unhealthy periodontium in terms of gingival bleeding and/or periodontal pockets and about 239 (81.2%) and 52 (17.6%) of subjects were with 0-3mm and 4-5mm loss of attachment respectively. 40% of the workers were having habits like tobacco and alcohol consumption. Conclusion: Though adequate periodic dental services are provided still majority of power plant workers had poor oral hygiene and moderate dental caries and periodontitis.