From 1928 he worked in the electrical industry and became at Électricité de France in 1946 the director of electrical equipment and operations and in 1948 the deputy general manager.
In 1959 Charles de Gaulle named him Commissaire général du Plan (General Commissioner of Planning) and he held this position until 1966.
He was elected a member of l'Académie des sciences morales et politiques in 1977.
[1] Pierre Massé did research in economics on the theories of economic depreciation, dynamic programming, and total factor productivity and in mathematics on Pontryagin's minimum principle.
[1] He was an invited speaker at the International Congress of Mathematicians in 1928 at Bologna.