Yes, there are earnings management problem in the given case study. The company and its supervisor, David are basically loosing on two fronts: one, they are unable to utilize tax benefits on deduction of depreciation, judiciously; and two, the matching principle is not reflected between the income and the expenses. The company could easily charge a higher rate of depreciation, as that would more appropriately reflect the state of actual use of equipment. And thus, since the depreciation is a tax deductible expense, would help in saving taxes too. Secondly, the lower rate of depreciation does not reflect the correct state of matching the income and the expenses of the company, as the amount of depreciation does not represent the actual amount of wear and tear to the equipment.