The term "manpower" refers to the human resources required to accomplish a task or job. Some synonyms for this term include workforce, personnel, staff, labor, employees and manpower pool.
In a business setting, these synonyms can be used interchangeably to refer to the individuals who make up a company's work environment. "Manpower" is commonly used in a military or industrial context, while "workforce" and "personnel" are more general terms. "Staff" can refer to a group of people who are working together, while "labor" is a term that is oftentimes used when referring to physical or manual work. "Employees" and "manpower pool" are both more formal terms that describe individuals who are employed by a company.