Is there a minimum requirement for per diem?

There is no universal minimum requirement for per diem rates, as they can vary by organization, location, and purpose. Typically, companies establish their own per diem policies based on federal guidelines, local cost of living, or industry standards. For example, the U.S. General Services Administration (GSA) provides recommended per diem rates for federal employees, which organizations may use as a reference. Ultimately, it's essential for organizations to define their own policies to meet their specific needs.