The number of hours an employee must work to be considered full-time and eligible for employee benefits such as health insurance, paid time off (including vacation leave and sick leave), and retirement accounts (401k and related employer-contributions) is generally in the sole discretion of the employer. This is because an employer is not obligated to provide these employee benefits or fringe benefits to any employee, whether full-time or part-time.

For example, the Fair Labor Standards Act (FLSA) does not define full-time employment or part-time employment. And whether an employee is considered full-time or part-time does not change the application of the FLSA—or the application of the Service Contract Act (41 US.C. §351) or the Davis-Bacon Act wage and fringe benefit requirements (40 U.S.C. §3141).

In Mississippi, as in other states, the definition of full-time employment and the eligibility for employee benefits such as health insurance, paid time off, and retirement accounts are typically determined by the employer. There is no specific number of hours that universally qualifies an employee as full-time across all businesses. Federal laws like the Fair Labor Standards Act (FLSA) do not define full-time or part-time employment, which means that the application of the FLSA, as well as other federal statutes like the Service Contract Act and the Davis-Bacon Act, does not hinge on an employee's full-time or part-time status. These laws are concerned with setting standards for minimum wage, overtime pay, and safe working conditions, but do not mandate employers to provide benefits. Therefore, in Mississippi, the provision of benefits and the criteria for an employee to be considered full-time are at the discretion of the employer, and employees should refer to their company's policies for specific eligibility requirements.