Since 2000, the economists showed, the demand for highly educated workers declined, while job growth in low-paying occupations increased strongly.
Home care aides, mostly women and mostly minorities, represent one of the nation's fastest-growing occupations, increasing from 700,000 to more than 1.4 million over the past decade.
Between 1881 and 1921, of male workers, those in public administration, professional occupations, and subordinate services, along with those in commercial occupations, increased from some 700,000 to 1,700,000 (out of a total workforce of some 9,000,000 in 1881 and 13,500,000 in 1921).
Meanwhile, the proportion of respondents in science-related occupations increased from 23% to 33%, 49%, and 56%, respectively.
As the theory predicts, top and bottom occupations increased the most, the former being classified as abstract tasks and the latter as manual tasks.
The sample suggests that jobs in bottom and top occupations increased, while employment shares decreased in the middle of the distribution.
In Europe, the share of high-skill occupations increased on average 5.5 percentage points between 2002 and 2012, with a similar decrease in medium-skill occupations, while the share of low-skill occupations remained flat throughout the period.
The coefficient of variation for the all causes rate across occupations increased from 0.29 in 1980 to 0.46 in 2005.
If this percentage sharply declines over time and, accordingly, the percentage of skilled occupations increases, we could then argue that for them the unskilled service occupations have served as stop-gaps springboards towards better positions.
Each NS-SEC classification contained absolute non-consumers of whole grain with 9 % absolute non-consumers in class 1 (high managerial and professional occupations) increasing up to 26 and 20%% in those in routine occupations and never worked, respectively.
