Human resources are a set of people who make up the workforce of an organization, business sector, industry or economy. The narrower term is human capital, ie the knowledge that individuals embody. Similar terms include workforce, workforce, traits, associates, or simply people in an organization. Human resources are considered important assets and are different from physical assets. Therefore, estimated human resources, along with other assets, are also needed to determine the total cost of the organization. Such a concept, where human resources are presented as a segment of accounting treatment, is the process of identifying and measuring human resource data and communicating that data to stakeholders. Numerous studies have shown that organizations with low human resource costs enjoy a competitive advantage as a percentage of total costs. This allows them to emerge as ‘winners’ in a competitive market. Thus, the need to control the cost of human resources ensures its greatest advantage over competitors who do not implement it. Human resources costs make up a significant part of the total operating costs in many organizations, including Croatia osiguranje d.d., which is shown in the penultimate part of the paper. This final paper aims at a theoretical presentation of the concept of costs, ie human resources, but also a practical presentation of the cost of human resources on the example of the company Croatia osiguranje d.d. Furthermore, as one of the goals of the work, analyzing is the importance of human resources for today's company, but also what is their relationship with the costs of the company.