Disaster Response Workforce Flexibility Act of 2017 This bill authorizes employees of the Federal Emergency Management Agency (FEMA) performing duties directly related to, or in support of, disaster preparation, response, and recovery efforts to be paid an amount of premium pay during fiscal years 2017 or 2018 to the extent that the total of basic pay and such premium pay for any pay period does not exceed the annual rate of basic pay for level II of the Executive Schedule. Such additional pay shall not be considered to be basic pay and shall not be used in computing a lump-sum payment for accumulated and accrued annual leave upon separation from service.