Marek Benio – lawyer, PhD in Economics. Vice-President of the Labour Mobility Initiative Association. Honorary Member of the Polish Social Security Association. Associate Professor, Department of Public Economy and Administration, Cracow University of Economics Expert in social security and labour law. Author of key legal opinions on the enforcement directive. Participant of public consultations. Contributor to many international research programmes. Author of numerous publications on social security, labour law, public economy and administration. Supervisor of over 200 MA and diploma theses. One of the ten best lecturers at the Cracow University of Economics.