The article examines problems in relation to the existing differentiation of work salaries among Ukrainian people given the fact that the level of income inequality in Ukraine has grown extraordinarily high compared to other European countries also undergoing market reformation. Detailed review is given to the factors influencing salaries' differentiation, namely: regional, inter-sectoral, professional-qualification, etc., as well as challenges and threats resulting from the existence of such high-level differentiation in the country. Analysis of factors and reasons for continuous labour remuneration differentiation have been examined and assessments made on the ways to mitigate impact of negative factors. Also, authors have formulated general proposals as relates to the official policy on prevention of further aggravation of salaries' differentiation in Ukraine