As is well known a large number of fields of action in the lives of people should be covered by means of insurance, ie should have as a feature accompanying the presence of insurance that serves as support for the activity and the negative supply generated, leaving the insurance companies to replace the load on the losses caused economic criteria, which means a very important role within societies figure of insurers, but these to cover the risks, look for ways to help them reduce the costs of losses, which apply to reinsurance ceding part of the risk to another company thus avoiding the performance of its indemnification obligations may be seriously affected. As you can see the figure of reinsurance can be a bit different in the field of insurance, but if it is a simple operation, which is established by exposing the different conditions that occur within the reinsurance contracts. Under the contract of reinsurance, the so-called insurer to the reinsurer cedes part or in whole risks that are covered by insurance, thanks to an agreement or compact about how they will spread premiums representing insurance coverage against potential risks and how each of the parties to the contract of reinsurance payments will staff the responsibility for damages or losses. Of the terms of the reinsurance division are two groups of raw and responsibility: Proportional reinsurance: The amount to be provided by the reinsurer for compensation is determined by the value of the premiums received and the total value of these, what which would be a mean proportional between responsibility and bonuses. non-proportional reinsurance, in this case the reinsurer is responsible for only certain values that exceed a set fee, ie a loss to respond valuable reinsurers. Some of the key features that are evident within the reinsurance contract, worth noting: The reinsurance will be a contract of insurance on insurance, under which a new agent, ie the reinsurer to take part in a partial or total risks that were insured by the first insurer. Reinsurance does not change in any provision the first contract between the insured and the insurer, and be solely responsible to the person affected by an accident and was assured that the insurance company, so there is no relationship between the insured and reinsurers. The insurer by reason of the reinsurance contract must disclose part of the insurance premium to the reinsurer. The reinsurance would then be a means for insurers to reduce the responsibility that had economically, distributing it to one or more reinsurers, and the main objective of carrying out the contract of reinsurance, the insurer is prevention through a second contract of insurance.