Grey-collar
Grey-collar refers to the balance of employed people not classified as white- or blue collar. It is occasionally used to describe elderly individuals working beyond the age of retirement, as well as those occupations that incorporate some of the elements of both blue- and white-collar, and generally are in between the two categories in terms of income-earning capability.

Grey-collar workers often have licenses, associate degrees, certificates or diplomas from a trade school or technical school in a particular field. They are unlike blue-collar workers, who can often be trained on the job within several weeks, whereas grey-collar workers already have a specific skill set and require more specialized knowledge than their blue-collar counterparts.

The fields that most recognize the differences between these two groups are human resources and the insurance industry. These different groups must be insured differently for liability, as the potential for injury is different.
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white-
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blue collar
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trade school
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technical school
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human resources
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insurance industry
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Grey-collar
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Grey-collar
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opposite of
different from