Lighting in workspaces is a crucial factor in ensuring adequate working conditions that enable optimal performance and well-being. An environment with deficient or excessive lighting can cause visual fatigue, stress, and negatively impact productivity. In the context of companies, where various administrative activities with different levels of detail are developed, evaluating the lighting risk factor of work surfaces is crucial to ensuring a risk-free work environment. This study aimed to quantify the levels and conditions of lighting on the work surfaces of administrative employees at a company and determine the presence of risk factors associated with inadequate lighting, in accordance with current legal requirements and international recommendations. Two hundred forty-three measurements of lighting levels on work surfaces in administrative offices were performed, and the results were analyzed. Properly calibrated equipment (luxmeter) was used, and medical literature concerning possible health effects derived from inadequate lighting conditions and/or the identification of the risk factor was reviewed. For the study, user perception of the work surface was not considered. Based on the review of recent scientific literature and the conclusions obtained, preventive and corrective actions were proposed and brought to the attention of those responsible for implementation.