Oral diseases are the most common, non-communicable diseases that affect people over their lifetime. These diseases often cause pain, discomfort, and defects, and may even lead to death. The 2016 Global Burden of Disease Study estimated that oral diseases affect half of the world's population, with dental caries in permanent teeth being the most prevalent condition assessed. Severe periodontal disease, which may result in tooth loss, was estimated to be the 11th most prevalent disease globally. However, periodontal disease occurs mostly in adults, and strengthening tooth cleaning habits is the most effective method of prevention. Adults spend one-third of their time in the workplace. Thus, workplace health promotion is very important for adults. However, oral health promotion programs in Taiwan's workplace are scarce. This article examines the health promotion experiences and recommendations of occupational health nurses. The findings may provide a reference for occupational health nurses in general.