1. change
   1. environment
   2. conditions
2. performer
   1. values and culture
      1. need
   2. psycholgical aspact
      1. motivation
   3. responsibility
3. strategic models
   1. best practice model
   2. resourced based model
   3. pre-/ descriptive school
4. organisation
   1. devision of work
   2. centralisation vs decentralisation
5. control
   1. strategy
   2. employee satisfaction