Today, the temporary agency work is a well-established industry in the Swedish labour market. The industry has grown every year since the start 1992 and seemingly, the legislation has not kept up with its’ pace. The reason behind the growth of temporary agency work is their clients impulsion for flexibility as well as making their organisation more efficient. Employers organizations argue that the ability to be flexible is a tool to increase economic growth in the society while the unions argue that the temporary agency workers are paying the price with insecure employment-contracts. The line between cancelation of employment due to redundancy and dismissal due to personal reasons is unclear, with disadvantages to the employment protection, through this triangular relationship between the temporary agency work, user company and the employee. The question is if the goal justifies the means. The purpose of this thesis is to investigate how the temporary agency work-industry is affecting the temporary agency workers employment protection, in addition, the thesis will investigate which legal impacts the legislation is creating in a diversity perspective. In order to answer the research questions properly, a traditional legal dogmatic method has been used as well as legal sociological perspective.