Carpal tunnel syndrome, a condition that causes pain, numbness, and difficulty moving the fingers, affects about one in ten people in France aged 20 to 64, with women being more commonly affected, according to a recent study. The condition is often linked to both personal activities and work-related tasks, as reported by Santé publique France (SpF), a public health agency. This study is notable because it is the first to explore why many people with this common condition do not report it as an occupational illness. The findings are based on telephone surveys conducted in 2020 and 2021, involving over 24,000 residents of Metropolitan France in the same age group. Slightly more than 10% of the participants reported experiencing carpal tunnel syndrome in the five years before the survey. Women accounted for six out of every ten cases. However, only about 10% of those affected sought medical help, typically from a general practitioner, and even fewer consulted specialists like rheumatologists or surgeons. Of those who did seek treatment, only 15% underwent surgery, with the majority being women aged 45 to 64. Despite over 70% of those affected believing their condition was caused by work, only 10% made an effort to report it as an occupational illness. Most of these cases were recognized by the Social Security system. The majority of people who did not report their condition cited reasons such as considering the symptoms minor (25%), not knowing how to proceed (11%), fearing job loss (10%), or finding the formalities too complex (9%). Carpal tunnel syndrome is the second most common occupational illness recognized by the French Social Security system, following shoulder-related conditions. According to the National Federation of Work Injured and Disabled (Fnath), between 11,600 and 32,300 cases related to work accidents or occupational diseases go unreported, potentially costing the Social Security system between 43 and 121 million euros annually.