Inspect for defects which have been either purchased or introduced in the factory. Maintain strict discipline in material handling and documentation procedures. MIL and ISO specifications can be followed for these procedures. Worker skill can be improved by testing job applicants for aptitude and by providing further training to those already employed. Worker morale may be improved by better labor relations regarding wages, working conditions, and work rules, by treating workers and their suggestions with more respect, and by reducing the division of labor by broadening and diversifying each worker's job.
Work done by machines and tools is typically more uniform than that done by hand.
Standard economic justification is required. Inspection is done by specialized personnel and equipment, but in addition, production workers can be motivated to call out defects they see while performing their production jobs. Repairing products rejected by inspectors may introduce new defects, so decisions about repair policy must be made. For example, printed circuits may be damaged by heat when replacing components. Reductions in both product cost and product defects would come from improving the manufacturing engineering department.