[1][2][3] Lebey began his career in the textile industry,[1] where he became a chief executive.

[1][2] In 1987, he began publishing the annual Guide Lebey des Restaurants de Paris and the Lebey des Bistrots de Paris et sa banlieue.

[1] He sold the Lebey brand to Gérald de Roquemaurel et Pierre-Yves Chupin in 2011.

[5] Lebey was the founder of the Club des Croqueurs de Chocolat, a non-profit organization for "chocolate biters", in 1981.

[6] With Jacques Pessis, he was the co-founder of the Association de sauvegarde de l'oeuf mayonnaise (ASOM), a non-profit organization for the defense of egg mayonnaise, in 1990.