The maximum leasing period is a legal regulation applicable to temporary employment. It defines the maximum time for which an employee may be leased to a client company. The regulation is intended to prevent employees from remaining permanently in temporary employment.The maximum leasing period is usually 18 months, though in exceptional cases or in the automotive industry, an extension of the leasing period is common. At the end of the maximum leasing period, the client company must decide whether to take on the temporary employee on a permanent basis or terminate the employment relationship.