This paper compares the effectiveness ofstrict liability and capped strict liability regimesin an agency relationshipamong a regulatory agency and operators of risky activities.Under a double asymmetric information assumption(wealth and efficiency in care effort), it showsthat capping liability is more efficient than keeping with strict liability,this at the price of an informational rent. Efficiency means that the efficient agent supplies the level of safety effort equivalent to the first best solution one. At the optimum, this rent is minimized by the efficient contract supplied by the principal. (JEL: K0, K32,Q01, Q58)