People are an integral part of any organization and can have a crucial impact on its future performance. The purpose of the selection process is to identify the candidate who, with their knowledge, skills and experience, will best complete the vacancy in the organization and thus contribute to increasing its performance. Conversely, negligence in selecting future employees can cause unnecessary waste of time and money, reduce productivity, and disrupt relationships with existing customers or business partners. In general, the selection process will vary from organization to organization. This paper describes in more detail a selection process which, according to its stages, consists of: an initial selection, application forms, employee testing, a comprehensive interview, a conditional offer, background checks, a medical examination and, ultimately, a permanent job offer. The employer can find candidates from various different sources, which are commonly divided into internal and external sources of candidates. Also, there are numerous instruments and selection methods at his disposal. It is clear that choosing the right employee requires a lot of effort and that mistakes can be quite expensive. The paper lists some of the most common mistakes and problems that occur during the selection process and tips on how to avoid them. Also, as part of the paper, the selection process in the company ''LIDL CROATIA Ltd.'' is briefly analyzed. It consists of various parts such as: a review of applications and CVs, pre-selection, selection and final decision making. Furthermore, the company uses different instruments during the selection. They vary depending on the job for which the selection is made. However, they typically include various forms of tests and interviews, while the selection process for some jobs also includes the use of an assessment center.