Final answer:
In Business, many organizations rely on paid staff and use volunteers as supplemental personnel.
Step-by-step explanation:
The subject of this question is Business.
In the context provided, the large part of the staff being paid and the volunteers being used as supplemental personnel is a common practice in many organizations.
For example, in labor unions, union shop relationships with employers require employees to become dues-paying members, while in nonprofit organizations like Planned Parenthood, voluntary members play a crucial role in their operations.