La Mutuelle Assurance des Travailleurs Mutualistes (Matmut) is a mutual insurance company with variable contributions governed by the Insurance Code. It designs, distributes and manages insurance products for cars, motorcycles, boats, houses, hunting, bodily injury, school insurance, as well as a range of insurance products for professionals and small businesses. It completes its range of products with assistance services and assistance and legal protection services for private life and corporate activities.

Matmut is in charge of central functions (finance, human resources, IT, etc.) and owns all the operational insurance subsidiaries (Matmut Protection Juridique, Matmut Vie, Matmut & Co, Matmut Patrimoine, Inter Mutuelles Entreprises).