The safest dependence structure among risks

In this paper we investigate the dependence in Fréchet spaces containing mutually exclusive risks. It is shown that, under some reasonable assumptions, the safest dependence structure, in the sense of the minimal stop-loss premiums for the aggregate claims involved, is obtained with the Fréchet lower bound and precisely corresponds to the mutually exclusive risks of the Fréchet space. In that respect, the present paper complements some previous studies by Heilmann (1986) [On the impact of independence of risks on stop-loss premiums. Insurance: Mathematics and Economics 5, 197–199], Dhaene and Goovaerts (1996) [Dependency of risks and stop-loss order. ASTIN Bulletin 26, 201–212], Dhaene and Goovaerts (1997) [On the dependency of risks in the individual life model, Insurance: Mathematics and Economics 19, 243–253], Müller (1997) [Stop-loss order for portfolios of dependent risks. Insurance: Mathematics and Economics 21, 219–224], Taizhong and Zhiqiang (1999) [On the dependence of risks and the stop-loss premiums. Insurance: Mathematics and Economics 24, 323–332]. A couple of actuarial applications enhance the interest of the results derived here. ©1999 Elsevier Science B.V. All rights reserved.

[1]  Jan Dhaene,et al.  A Note on Dependencies in Multiple Life Statuses , 2006 .

[2]  Jan Dhaene,et al.  On the dependency of risks in the individual life model , 1997 .

[3]  A. Tchen.  Inequalities for distributions with given marginals , 1976 .

[4]  Moshe Shaked,et al.  Supermodular Stochastic Orders and Positive Dependence of Random Vectors , 1997 .

[5]  Shaun S. Wang.  Premium Calculation by Transforming the Layer Premium Density , 1996, ASTIN Bulletin.

[6]  Marc Goovaerts,et al.  Ordering of actuarial risks , 1994 .

[7]  Satishs Iyengar,et al.  Multivariate Models and Dependence Concepts , 1998 .

[8]  Jan Dhaene,et al.  Comonotonicity, correlation order and premium principles , 1998 .

[9]  A. Müller.  Stop-loss order for portfolios of dependent risks , 1997 .

[10]  On the impact of independence of risks on stop loss premiums , 1986 .

[11]  Shaun S. Wang,et al.  Axiomatic characterization of insurance prices , 1997 .

[12]  Taizhong Hu,et al.  On dependence of risks and stop-loss premiums , 1999 .

[13]  Rob Kaas.  How to (and how not to) compute stop-loss premiums in practice , 1993 .

[14]  Marc Goovaerts,et al.  Dependency of Risks and Stop-Loss Order , 1996, ASTIN Bulletin.

[15]  Marc Goovaerts,et al.  Comonotonicity and Maximal Stop-Loss Premiums , 2010 .

[16]  Bart Kling and Henk Wolthuis.  Ordering of risks in life insurance , 1992 .

[17]  N. Bäuerle,et al.  Modeling and Comparing Dependencies in Multivariate Risk Portfolios , 1998, ASTIN Bulletin.