Background: Acute low back pain is an important public health problem in the world that affects economically active people; this condition generates an increase in the use of resources through the payment of subsidies and loss of working days. Aim: The purpose of this study is to know the compliance and adherence to the regulations in the prescription of incapacities in patients with acute low back pain. Design and Setting: Descriptive cross-sectional study. Methods: Descriptive cross-sectional study. A non-probability sampling was carried out in patients with temporary incapacity for work; medical care was evaluated through the Unique Process Evaluation Form (CUEP) for prescription of incapacity to obtain the percentage of compliance through an assessment scale. Results: Of the 10 items that make up the CUEP, four of them showed results in green, five in yellow and one in red. Conclusion: Compliance with regulations was partially achieved (73%). There are areas of opportunity in the continuous improvement of medical attention focused on incapacity, the permanent application of this evaluation instrument will allow to achieve that objective.