Personnel (noun)

1. The department responsible for the management and staffing of an organization.
2. The people who work for an organization, company, or business.
3. All the people employed by a company or organization.

Origin:

From french personnel, from old french personnel, from latin personalis ("persona.l")

Examples:

1. The company's personnel department was responsible for hiring new employees.
2. The personnel of the company were invited to a meeting.
3. The personnel on the project were working overtime.