From a microeconomic point of view, the control of insurance fraud requires
a detailed knowledge of the insureds' behaviour. In this paper, we present
discrete-choice models for fraud behaviour and we estimate the influence o
f the insured and claim characteristics on the probability of committing fr
aud. Data correspond to a Spanish sample. Correction for choice-based sampl
ing is introduced in the estimation due to the oversampling of fraud claims
. The structure of the Spanish automobile insurance market is also discusse
d. Our results differ according to the type of fraud behaviour that is unde
r consideration. (C) 1999 Elsevier Science B.V. All rights reserved.