Indonesian Actuarial Journal
Vol. 1 No. 2 (2025): Indonesian Actuarial Journal

A Deeper Look Into an Insurance Risk Model with Two Types of Claims and FGM Copula Dependency

Saruan , Sandy Salomo (Unknown)
Effendie, Adhitya Ronnie (Unknown)



Article Info

Publish Date
31 Dec 2025

Abstract

This paper investigates a continuous-time, two types of claims risk model where the dependence between claim sizes and inter-claim times is structured using a Farlie–Gumbel–Morgenstern (FGM) copula. The methodology begins with the construction of a Lundberg’s equation and the determination of its non-negative roots. Subsequently, the integro-differential equation for the ruin probability is derived, from which the Laplace transform of the ruin probability is obtained. For the specific case of exponentially distributed claim sizes, an explicit analytical expression for the ruin probability is derived to examine the effects of dependence parameters and distributional characteristics. A series of numerical experiments with varying FGM copula parameters demonstrate that the ruin probability decreases as the initial surplus increases and is significantly influenced by the strength of the dependence structure. From a practical perspective, distinguishing between claim types allows insurers to identify which category poses the greatest threat to solvency, thereby supporting more targeted underwriting and accurate capital allocation strategies.

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Journal Info

Abbrev

iaj

Publisher

Subject

Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Mathematics Physics

Description

The Indonesian Actuarial Journal (IAJ) is an international peer-reviewed electronic journal published by the Society of Actuaries of Indonesia (Persatuan Aktuaris Indonesia). The journal is published twice a year and may also feature special issues addressing specific themes of interest in actuarial ...