Master's Thesis from the year 2022 in the subject Leadership and Human Resources - Management Styles, grade: 1.7, Buckinghamshire New University, language: English, abstract: Over the last 20 years, the prevalence of mental illness has risen significantly worldwide, with cumulative annual costs to companies of around one trillion US dollars in lost productivity (WHO, 2021). In the context of the megatrend of health, HPL is a key element to strengthen well-being, resistance, and performance of employees. The correlation between HPL and HL is an under-researched field and has not been investigated in consultancies. The objective is to investigate the self-assessed HL of leaders and employees of consulting companies and to examine to which extent HL depends on individual characteristics. A quantitative assessment of HL was conducted through an online questionnaire based on the European Health Literacy Questionnaire (HLS-EU-Q47), and the responses were statistically analysed.