This paper addresses the question to which extent the complementarity between educationand training can be attributed to differences in observable characteristics, i.e. to individual,job and firm specific characteristics. The novelty of this paper is to analyze previouslyunconsidered...

The question of whether two drugs - namely alcohol and tobacco - are used as complements or substitutes is of crucial interest if side-effects of anti-smoking policies are considered. Numerous papers have empirically addressed this issue by estimating demand systems for alcohol and tobacco and...