Not all motives are created equal. Don gives Charlie a long list of suspects with the same motive. Charlie uses an asymmetric threat assessment to see which of their suspects were the most affected by their motive and most likely to act.
When employees are putting in just enough effort to prevent themselves from getting fired, it is a good indication they are in need of a little motivation. Companies need to understand what motivates their employees - examples include monetary rewards and social mobility - then adapt to implement the correct incentives.
The partners explain to their employees that the company is going through some tough times. They demonstrate their commitment to their employees by sacrificing their Christmas bonuses so that everyone else can receive a bonus. Don ends the meeting by inspiring his employees to work hard the next few weeks in order to make the company flourish.
Newman needs to deliver mail so he can get transferred to Hawaii. Although he and Jerry are sworn enemies, Jerry offers to help him deliver the mail so that he will move away. Both individuals will benefit from helping Newman.