The employee's health and safety and, in some occupations, that of third persons may be in danger if the occupational health requirements of the worker no longer fit the specific demands of a job.
Their gains in some occupations have been nothing short of astounding.
And productivity, or labor efficiency, cut into employment in some occupations -- typists, for example.
In some occupations an intermediate distance is also required, and a third segment can be added, forming a trifocal lens.
Job loss in some occupations will certainly continue, but it will be accompanied by gains in different fields, just as in the past.
It turns out that this contribution varies vastly: knowing a person in some occupations provides substance to measures of social capital, while knowing a person in a few occupations is irrelevant and contributes statistical noise and causes attenuation bias.
"In some occupations these EU workers are competitors for British workers and employers now have to pay more to recruit the remaining British or foreign workforce.
But in some occupations, like operating a giant crane or piloting an aircraft, the consequences can be devastating.Human errors are often put down to a momentary loss of concentration.
"In a global economy, taking a week off is perceived in some occupations as giving an undue advantage to your competitors," said Jared Bernstein, the director of the Living Standards program at the Economic Policy Institute, a liberal policy group in Washington.
They account for nearly 5percentt of the nation's civilian labor force, with higher shares in some occupations: 29percentt of roofers, 24percentt of agricultural workers and 25percentt of construction laborers.
