With the emergence of the new technologies is presented new challenges for the law and the regulation of them activities that commit them same. In the case of labor law, we find the use of new technologies in tasks that are met on a daily basis in the workplace, the employer facilitates the worker such tools or instruments to make more effective their working efficiency. However, raises the possibility of that the worker do use personal of such tools, since in general make part of the life everyday of the worker. Therefore, is creates the tension between the power of surveillance that can have the employer about the worker with regard to the use of them media computer that you facilitates and the right to the privacy of the worker, recognized constitutionally.