Fairness for Federal Contractors Act of 2019 This bill appropriates funding to provide compensation to certain employees of contractors who lost pay or leave due to the lapse in appropriations that began on December 22, 2018. Each agency subject to such lapse shall adjust the price of any contract for which the contractor was ordered to suspend, delay, or stop work as a result of the lapse. The agency shall compensate the contractor for reasonable costs incurred to (1) provide compensation, at an employee's standard rate of compensation, to any employee who was furloughed or laid off, or who was not working, who experienced a reduction of hours, or who experienced a reduction in compensation, as a result of the lapse, for the period of the lapse; or (2) restore paid leave taken by any employee during the lapse, if the contractor required employees to use paid leave as a result of the lapse. The maximum amount of weekly compensation of an employee for which an adjustment may be made may not exceed the lesser of the employee's actual weekly compensation or $1,400.