Prof. Guido Lacca is a doctor registered with the Order of Physicians of the Province of Palermo, Specialist in Occupational Medicine. University Researcher in Occupational Medicine (SSD/MED44) since 18/12/2008. Aggregate Professor Chair of Occupational Medicine University of Palermo, Lecturer in numerous University Degree Courses at the University of Palermo (Degree Course in Medicine and Surgery, Degree Course in Health and Work Environment Prevention Technicians, Degree Course in Medical Radiology Technicians, Degree Course in Biomedical Laboratory Technicians, Degree Course in Speech Therapy, Degree Course in Optics and Orthoptics, Degree Course in Nursing and Midwifery) and at Specialisation Schools in the Medical Area (School of Specialisation in Occupational Medicine, School of Specialisation in Hygiene and Public Health, School of Specialisation in Forensic Medicine, School of Specialisation in Medical Physics, School of Specialisation in Pneumology). He works as Competent Doctor for numerous public and private companies of national and international relevance. From 2014 to 2021, by appointment of the Rector of the University of Palermo, he held the position of Head of the University’s Prevention and Protection Service. The dissemination and research activity is documented by 91 publications in national and international journals and 4 scientific texts published in print on occupational and public health and prevention topics.