Quality control

  • avoid substandard product

  • cheaper fewer workers needed

  • reactive not proactive

  • expensive

  • large product of substandard products

  • accepted reject rate, quality assurance aims for 0 defects

Quality assurance

  • check for mistakes as a product is being made

  • improve employee motivation by giving them responsibility

  • employee participation

  • reduce cost of wastage (avoid large batches of defective products)

  • proactive

  • expensive compared to qc

  • only works if each employee wants high quality

  • not feasible to check each product