The present work analyses the implications of the labour reform introduced by Laws 13.429/2017 and 13.467/2017 for teaching in private education institutions in the State of the Mato Grosso do Sul through the Regional Labour Court of the 24th Region (TRT 24º R.). To this end, on the basis of the quantitative and qualitative approach, a bibliographic and documentary search has been carried out. The sources analysed in the documents correspond to labour legislation from 2016 to fraction of 2019, as well as to TRT 24th R.’ s trials of actions on this matter. The processing of these data was done by categorisation of content. The analytical trait was given by defining three categories, namely: employment relationship, overlapping of functions and wage differences. We identify that the subject of teaching after the labour reform has in the judiciary a body of resistance to implementing measures to weaken working conditions.