Generally, the results-oriented approach caused by the agency relationship encourages in managers opportunistic behaviours which cause organizational deviances. This study aims at analysing the said behaviour in 16 public companies in Cameroon, in view of outlining the conditions to preserve the said approach and reduce the risks caused. The deviances identified such as corruption and embezzlement of public funds is caused by an imbalance between the organization and the institutions. The identification of binding mechanisms for public managers and the control of their behaviours in order to align their interest to that of the State-shareholder were suggested.