Refers to the reinstatement of the limit of liability under an insurance policy that is in effect for two or more years and that contains a single aggregate limit of liability for the entire policy period. Under this provision, insureds may purchase during the policy period an additional limit of liability for future claims, thus allowing additional protection for insureds who believe that prior claims during the policy period may erode the original limit of liability to an unacceptable level. A limit reinstatement provision grants to the insureds the absolute right to purchase the additional limit of liability (upon payment of a specified additional premium), and the insurer has no underwriting discretion at the time the option is exercised by the insureds. If the insureds maintain several layers of insurance coverage within their insurance program, the limit reinstatement provision frequently provides that the additional or reinstated limit of liability affords coverage excess of all other coverage in force at the time the reinstatement option is elected. This type of excess limit reinstatement provision is commonly referred to as an around the clock provision.