Final answer:
Incentives should be given to staff and volunteers to retain talent, increase productivity, and enhance morale, but not to promote favoritism, as this can damage team dynamics.
Step-by-step explanation:
To why you should provide incentives to staff and volunteers, except for one reason, is because incentives promote favoritism. While incentives can be beneficial in many ways, promoting favoritism is generally not considered a positive outcome of providing incentives.
Offering incentives can be an effective strategy for retaining good staff, increasing productivity, and boosting morale. These positive effects are supported by evidence such as the efficiency wage theory, which posits that better pay leads to more productive employees who are also more likely to remain with their current employer. However, it is critical that incentives are structured fairly to avoid unintended negative consequences such as favoritism which can undermine teamwork and morale.
Incentives can come in various forms, including purposive incentives, which are aligned with personal or collective goals; solidary incentives, which are related to the enjoyment of being part of a group; and material incentives, which offer tangible rewards.