Manifestations of thought and opinion began to occur more intensely after the advent of the internet, considering that anyone connected to the network can write a message and share to everyone in a way previously unimaginable - for example, nowadays it is possible sending a messagem to one or more people who is on the other side of the world in real time and this publication reached a thousand views quickly. The employment relationship itself is also impacted in this aspect. The right to freedom of expression started to be used as argument by employees who have suffered reprisals as a result of manifestations on the internet. On the other hand, employers justify their attitudes with the answer that these manifestations harm their honor, and, based on article 482, K, of the Consolidation of Labor Laws (1943) in Brazil, which expressly provides that it constitutes sufficient reason to dismiss from the job act harmful to honor or good reputation or physical offenses committed against the employer and hierarchical superiors (...), to dimiss. Therefore, clearly there is a collision of two constitutional rights in a relationship marked by the legal subordination of the employee to the employer by employment contract. In this way, it is essential to understand what determines the preponderance of one or another right when they are in collision, since the consequence of the manifestation in this case can be much more serious than if it were made in a relationship between two common people: the employee can be dismissed for just cause, which eliminates not only their long-term support, but also a series of labor rights. In order to understand this collision, in addition to doctrinal research, it investigates how the employee s freedom of expression in internet demonstrations has been decided by the Regional Labor Court of the Third Region - Minas Gerais (TRT-3), Regional Labor Court of the Second Region - São Paulo (TRT-2) and Regional Labor Court of the First Region - Rio de Janeiro (TRT-1), through analysis of the judgments handed down from 01/01/2015 to 12/31/2021.