In the paper, we calculate Okun’s coefficients in the regions of Poland. We compare the coefficients estimated for each region separately with the calculations obtained from seemingly unrelated regression (SUR) models. The results reveal that the latter method gives better estimates, because shocks in output are highly correlated across regions. Then, we consider the question concerning the existence of macroeconomic “clubs” among Polish regions. Two such clubs are found: the northwest of Poland and the eastern border region. Finally, some conclusions concerning economic policy preventing unemployment are drawn.