Final answer:
The suggested ratio of HR staff to employee population is one full-time equivalent HR staff member for every 1,000 to 1,500 employees.
Step-by-step explanation:
According to the guidelines provided by the International Association of Counseling Services, it is recommended to have one full-time equivalent HR staff member for every 1,000 to 1,500 in the employee population. This ratio helps ensure that an organization has adequate human resources support relative to its employee size. However, the exact number of HR staff may vary depending on the organization's specific needs, industry standards, and other factors such as whether HR staff roles are full-time, part-time, their salary levels, and the size of the overall HR staff.