The objective of this article is to analyze the impact of business cycle fluctuations on the regional labour market. The study is based on a less developed Polish region, i.e. Warmia and Mazury. Five variables are selected to describe business cycle fluctuations on the regional labour market: unemployment rate, number of employed persons, number of created jobs, number of unemployed persons who found a job, and the average gross wage. In order to eliminate the effects of seasonality as well as the impact of irregular factors, the TRAMO-SEATS method is used. For the business cycles estimation, the Christiano-Fitzgerald band pass filter is applied, and the Bry--Boschan procedure is applied to date business cycles turning points. The results of the survey imply that some of the labour market variables can be treated as leading, and others as lagged business cycles variables in relation to the reference series, i.e. output of industry.