Reinsurance Classification Dimension This dimension relates to the types of reinsurance classification. Non Proportional Reinsurance This refers to either traditional forms of excess of loss reinsurance arrangements written on a treaty reinsurance arrangement basis or reinsurance written on an individual offer and acceptance basis; where the reinsurer pays losses only above an agreed retention/deductible up to an agreed maximum limit. Proportional Reinsurance This refers to either traditional forms of quota share and/or surplus reinsurance placed on a treaty reinsurance basis or reinsurance written on an individual offer and acceptance basis; where the reinsurer and reinsured share, in proportion, the premium and losses of the reinsured.