rtokens: The department said wages and salaries decreased by $ 6.9 billion in July after climbing $ 45 billion in June .
pos: NNS CC NNS VBD IN NN IN NNP IN DT JJR JJ NN CC JJR JJ NNS VBD IN NNS .
tokens: Wages and salaries came under pressure in July as a shorter average workweek and lower hourly earnings cut into paychecks .
ltokens: Department officials said July 's slight gain in incomes was the weakest for any month since January , when they were flat .