This are needed either in the form of direct labor that is they directly add to the rate of the work unit via performing manual work on this or via controlling the machines that execute the work or indirect labor that is supporting or managing the system as computer programmers, part programmers computer, operators for CNC machine tools, upholding and repair personnel etc.
Now, based on the different factors that define a manufacturing system, these are classified into number of types. The factors utilized in manufacturing systems classification scheme are:
(a) Categories of operations performed that is processing operations versus assembly operation.
(b) Number of workstations and system layout that is one station versus multi-station.
(c) Level of automation that is manual, fully -automated, or semi automated.
(d) Part or product variety that is identical work units or variable work units.
In following the detail description of the types of manufacturing system based uoon above factors is provided: