Single role, and multiple role conflict are another set of factors that can impact on stress levels phenomenally for a lot of workers. Single role conflict tends to occur when there a number of elements to one's role and these elements cause conflict and paradoxes, and are therefore difficult to reconcile. Supervisors tend to suffer from this conflict particularly if they need to be command authority, yet maintain a social cohesion with work peers. The need to discipline a member of staff that they have a social affinity with could become stressful and cause upset.
In my experience, one of the biggest single impediments to the use of money as motivator is the manager's inability or insufficient effort to measure employee performance accurately and regularly, give performance feedback to the employee regularly, and set goals/standards that are challenging, realistic, and have strong relationship to business success. Since it is easier to measure performance and set performance standards/objectives in some jobs than others, money as motivator is more effectively used in some jobs than others. Nevertheless, company wide incentive plans can be powerful in the right circumstances.