The Government's figures on take home pay should be taken "with several tonnes of salt", the TUC has claimed.
TUC general secretary Frances O’Grady said the figures "do not include the effects of tax credits and benefits".
Freezing child benefit has hit families hard.
The figures use the lowest possible measure of inflation (CPI), which excludes housing costs, and is not the one that the government uses to index rail fares (RPI) and other important contributors to living costs.
The analysis also uses the most generous possible measure for wages, and not the one that the Government uses (average weekly earnings) when measuring incomes.
More top news
Apple has found a solution to the text message bug that was able to crash users' iPhones.
A giraffe has been born in front of visitors to a zoo in Devon.
Viewers have complained that the act between French ventriloquist Marc Metral and his dog, Miss Wendy, is cruel.