the department responsible for hiring and training and placing employees and for setting policies for personnel management
"The new vice president of personnel will be leading a major initiative to revamp our recruitment strategies and update employee handbooks."
Employees; office staff.
"The new manager spent her first week meeting with all personnel to introduce herself and answer their questions about upcoming changes."
In plain English: Personnel refers to all the people who work for a specific organization or company.
"The manager announced that all personnel must attend the safety meeting tomorrow."
Usage: Use the plural form "personnel" to refer to all employees collectively, and never add an "s" to make it plural or use it with a singular verb. Avoid using "personnel" as a synonym for a single individual, which should instead be called a person.
The word personnel was borrowed directly into English from French without being adapted to fit English spelling rules. It is a doublet of the word personal, meaning both terms share the same origin but entered English through different paths.