1. Groupe de Recherche en Droit, Economie, Gestion (GREDEG)—Centre National de la Recherche Scientifique (CNRS), Côte d’Azur University, 06000 Nice, France
2. Economic Research Forum (ERF), Giza 12311, Egypt
3. Global Labor Organization (GLO), 45141 Essen, Germany
4. Department of Economics, Higher Institute of Business Administration, University of Gafsa, Gafsa 2112, Tunisia