Why are the figures on the labour force seasonally adjusted?

Seasonally adjusted figures are used to show short-term developments in unemployment. These figures take into account changes in unemployment levels that are part of the yearly cycle. The number of unemployed people usually rises in January and February (for example because of contracts coming to an end or weather conditions). In July, too, unemployment usually rises, after which it drops in August (especially among young people). The degree of such seasonal influences may differ from year to year. For month-on-month comparisons it is best to use the seasonally adjusted figures. For comparison with the same period twelve months previously, unadjusted figures can be used.