Defence date: 7 June 2002Examining board: Prof. Giuseppe Bertola, EUI ; Prof. Ramon Marimon, Ministry of Science & Technology, Madrid, Supervisor ; Prof. Claudio Michelacci, CEMFI, Madrid ; Prof. Dale Mortensen, Northwestern UniversityPDF of thesis uploaded from the Library digitised archive of EUI PhD theses completed between 2013 and 2017-- Job competition, hold-ups and efficiency -- Excess job destruction with worker moral hazard -- Efficient employment protectio