What is occupational structure?

What is occupational structure?
This refers to the aggregate distribution of occupationsin society, classified according to skill level, economic function, or social status. The occupational structure is shaped by various factors: the structure of the economy (the relative weight of different industries); technology and bureaucracy(the distribution of technological skills and administrative responsibility); thelabour-market (which determines the pay and conditions attached to occupations); and by status and prestige (influenced by occupational closure, life-style, and social values)