1) Fraud in fiction 2) Kind of crime 3) Like a middle manager 4) Like office managers 
A term used to describe people in non-manual occupations including office workers and the professions, such as the law.
the aggregate of occupations not requiring manual labour (and its associated clothing conventions: see blue-collar), which, at least for most of the twentieth century, implied superior working conditions.
[adj] - of or designating work or workers of relatively high status whose duties call for well-groomed appearance
adjective of or designating salaried professional or clerical work or workers; `the coal miner`s son aspired to a white-collar occupation as a bookkeeper`
Middle-class workers; so called because of the tendency of middle-class men to wear white shirts to work.