The definition of employee for the EEO-1 Report should answer your question
"'Employee' means any individual on the payroll of an employer who is an employee
for purposes of the employers withholding of Social Security taxes except
insurance sales agents who are considered to be employees for such purposes
solely because of the provisions of 26 USC 3121 (d) (3) (B) (the Internal
Revenue Code). Leased employees are included in this definition. Leased Employee
means a permanent employee provided by an employment agency for a fee to an
outside company for which the employment agency handles all personnel tasks
including payroll, staffing, benefit payments and compliance reporting. The
employment agency shall, therefore, include leased employees in its EEO-1
report. The term employee SHALL NOT include persons who are hired on a casual
basis for a specified time, or for the duration of a specified job (for example,
persons at a construction site whose employment relationship is expected to
terminate with the end of the employees work at the site); persons temporarily
employed in any industry other than construction, such as temporary office
workers, mariners, stevedores, lumber yard workers, etc., who are hired through
a hiring hall or other referral arrangement, through an employee contractor or
agent, or by some individual hiring arrangement, or persons
(EXCEPT leased employees) on the payroll of an employment
agency who are referred by such agency for work to be performed on the premises
of another employer under that employers direction and control."