Bonus/Malus scale on the anniversary of the contract. Generally, one degree corresponds to a 5% discount or surcharge. The starting class may depend on the driver's age, sex, place of residence, the car's horsepower. Each country has a different legislation, which rules how many degrees an insurer may increase or decrease, the maximum bonus or malus allowed and which statistics insurers can use to evaluate the starting class of a driver. A BMS usually has an effect on road safety statistics, as it stimulates drivers to be careful and avoid accidents that would lead to the loss of bonus. Most insurers have a policy whereby an unused bonus or NCD will expire in within two years. Insurers will discontinue a prior customers no claims bonus if they no longer have an insurance policy. Bonus hunger There is a basic question under Bonus–malus system based on insurance customer's point of view, that is, “Should an insurance customer carry an incurred loss himself, or should he make a claim to the insurance company?”. Hence, an insurance customer prefers to choose self-financing an occurred loss by carrying a small loss himself in order to avoid an increased future premium, instead of financing the loss by compensation from the insurance company. This strategy is called bonus hunger of the insurance customer. In this strategy, the insurance customer prefers the most profitable financial alternative, after a loss occurrence. A well-designed bonus–malus system must take bonus hunger into consideration. Executive compensation In executive compensation, particularly at banks, bonus–malus refers to schemes where annual bonuses are held in escrow (do not immediately vest), and can be reduced retroactively (clawed back) in case of losses in future years. The intention is to align incentives better and encouraging a long-term view in directors, by discouraging the taking of risks which may yield short-term profits (and hence bonuses in early years) but with long-term losses (which, under a traditional bonus system, would not be penalized). Such a system was proposed by Raghuram Rajan in January 2008. Author Jim Collins proposed that executives be expected to buy stock with their own money (as was done at IBM in the 1990s) taking on both up-side rewards and down-side risk. In November 2008, UBS AG announced a change to its executive compensation scheme implementing such a system, which it dubbed a "bonus–malus" system. French insurance price calculation In France, the prices of insurance