Exempt and non-exempt are orthogonal to salaried an hourly.
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Overtime for an hourly exempt worker is 1.0x.
Overtime for a salary exempt worker is not defined.
Overtime for an hourly non-exempt worker is 1.5x.
Overtime for a salary non-exempt worker is poorly defined.
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An hourly computer professional making over $27.63/hour is likely exempt. One working under that amount is non-exempt.
The specifics of how the FLSA applies to computer professionals is described in https://www.dol.gov/agencies/whd/fact-sheets/17e-overtime-co...