Salamanca, España
Using a panel of large firms from Spain, we check the relative time persistence of different types of labour conflicts such as strikes, collective conflicts, lockouts and other conflicts with lost working hours but with no specific legal form. The results show that no legal form labour conflicts do not have long-term persistence (only from quarter to quarter), and the other types of conflicts suffer short and long-term persistence of conflicts at the firm level. Strikes have the higher size of both types of persistence. As short and long term persistence of strikes have almost the same size, these results do not support asymmetric information theories of strike.