Since certain future conditions or acts must occur before any claims can be paid, insurance contracts are known as:

Bilateral contracts involve mutual promises exchanged between two or more parties, each obligated to perform a specific action or service. In insurance contracts, however, the insurer typically promises to pay claims if certain conditions are met, making it a unilateral rather than a bilateral agreement.

Unilateral contracts are characterized by a single party making a promise that is contingent upon the occurrence of a specified event. In insurance contracts, the insurer's obligation to pay claims is triggered by the policyholder meeting the stipulated conditions, making it a prime example of a unilateral agreement within the realm of contract law.

Unconditional contracts do not impose any specific requirements or conditions for performance; they are absolute in nature and do not rely on future events to trigger obligations. Insurance contracts, on the other hand, are fundamentally based on the fulfillment of predetermined conditions, making them inherently conditional rather than unconditional.