in Hacienda Hotel, 279 N.L.R.B. at 605, when quantifying the amount of backpay, the Board attempted to resolve significant testimonial conflict over the amount of tips cocktail waitresses received, and arrived at a reasonable approximation based on the evidence before it. In doing so, the Board noted that “exactitude is not possible.... ” Id. We agree that such approximations are not improper. We therefore find that, viewing the record as a whole, the Board’s order of back-pay was supported by substantial evidence. C. Substantial Evidence of Mitigated Damages Atlantic also contends that by failing to make reasonable efforts to obtain interim employment, Jenkins did not mitigate his damages and Atlantic is, therefor e, not obligated to pay Jenkins back wages. See Tubari, 959 F.2d at 454 (<HOLDING>). Once the amount of backpay has been
holding that erisa did not permit employee to bring claim for punitive damages against employer holding that employee may claim contract created based on employer promise of severance pay to employee holding that where employee gave notice to employer of injury and employer told employee that nothing could be done for him through workmans compensation employer had breached statute and was liable for medical treatment which was reasonable and necessary to restore employee to maximum usefulness holding that the burden of proving that the employee did not make reasonable efforts is on the defendant holding that where employee has not exercised reasonable diligence in efforts to secure employment employer has established that employee did not properly mitigate damages