Social context - the where, what and when of the situation. The working environment is a constantly changing social context, from sitting at a desk and working alone to being in a formal meeting with colleagues to having an informal chat when making some coffee. As the other factors are effected by this they are also in flux.
Edgerton, N. and S. Palmer (2005). "SPACE: A psychological model for use within cognitive behavioural coaching, therapy and stress management." The Coaching Psychologist 1(2): 25 -31.