The labour market has brought new mutations with the impact of globalization, the changes that have been taken internally in the face of the labour law, the recommendations and new conventions that have arisen within the International Labour Organization (ILO), and even with the environmental policies taken by states concerning the climatic phenomena that have been presented in recent times. The technological changes inherent in globalization, the expansion of the economy and the general market between states, and the subscription of free trade agreements have generated modernization in the face of the natural conception of the world of work, thus allowing the flexibility in the existing contractual modalities in labour law of Colombia.