The thesis deals with the significance and obligations of organizational rules, conditions of employment, internal regulations and directives as a mandatory and required part of the employment relationship and additional employment contracts, contracts of work and work arrangements. The first theoretical part describes sources of labor law, defines subjects of the employment relationship, internal regulations and there is also described possible enforcement of contions of employment. It deals with a workflow of creation of control acts. In the second part there are explained new conditions of employment of an existing company. There are also analyzed conditions of employment of another company and afterwards both conditions of employment ar...