Models of organisational behaviour are used to understand and predict human behaviour in organizations. There are several common models including autocratic, custodial, supportive, and collegial models. The autocratic model relies on power and authority, while the custodial model focuses on economic resources. The supportive model emphasizes leadership and participation. Finally, the collegial model is based on partnership and teamwork. No single model is best - the optimal model depends on the situation and changes over time. Managers must assess which models are most effective given current conditions.