摘要：Despite the conventional coverage of trade unions and the different strategies and agreements that private sector organisations have used to lessen trade union power and collective bargaining, collective bargaining has had an impact on stock markets in Colombia. The aim of this paper is analyse if the signing of a firm level collective agreement has informative content for the investors of Colombian Stock Market.The results show that the signing of an agreement is interpreted as bad news in those companies with greater union strength, on the other hand, the market reacts positively in those companies where the union loses power.
