He is Professor of Labour Law and Social Security at the University of Seville and has been in two legal cases of the Constitutional Court. She is the author, among many other publications in his specialty, monographs or the union, legal nature and structure (1982) Disciplinary power in the company (1991), Equality and Discrimination (1985) and The will of the worker in the extinction of employment contract (2000), the last two in collaboration with Miguel Rodríguez-Piñero.