The aim of this paper is to examine what protection is provided to workers with valid work contracts in the process of bankruptcy. Bankruptcy is a common fate of many companies in the Republic of Croatia, and affects the jobs of thousands of workers each year. However, a legal framework to regulate bankruptcy provides some protection of workers' claims. With the adoption of the new Bankruptcy Act and the Act on securing workers' rights in the event of bankruptcy of the employer, which entered into force in September 2015 and earlier changes to the Financial enforcement Act and the introduction of the institute pre-bankruptcy procedure, there have been some changes in this area. Due to the short period in which the new bankruptcy law was in effect, it is not possible to discern how the new legislation will work in practice. Therefore, this paper theoretically analyses the position of workers in the old and the new Bankruptcy Act, the procedure to ensure workers claims in the event of bankruptcy of the employer and the role of the security of workers claims in the event of bankruptcy of the employer. At the end of the work provides a case study based on a large company.