We study the adoption of lean production in American manufacturing for the past fifteen years. It is based on an intensification of work and is accompanied by an increase of occupational injuries and illnesses. Thus, for detailed manufacturing industries, we proxy reorganization by an indicator...

Les lois de conservation restent peu utilisees en economie. Cette note offre une nouvelle version du theoreme de Noether adaptee au contrat optimal, methode d'optimisation dynamique la plus souvent retenue en economie theorique. Ce theoreme permet de determiner des quantites invariantes le long...