In this talk, we present the Structured Multi-criteria Model of Self-Managed Motivation in Organizations based on happiness at work. The research was conducted before and during the pandemic time. We report and analyze the survey results conducted in Poland among the representatives of Generation Z, who had been employed for at least 6 months. We developed and validated a new approach to motivation using methodologies called Factor Analysis. Based on empirical verification, we found a new tool that connects employee motivation and selected areas of the Hygge concept called "Hygge Star Model", which has the same semantics before and during Covid-19 pandemic.