S.1924: A bill to amend chapter 81 of title 5, United States Code, to create a presumption that a disability or death of a Federal employee in fire protection activities caused by any of certain diseases is the result of the performance of such employee's duty.

Federal Firefighters Fairness Act of 2007 - Amends federal law to provide that, in the case of an employee in fire protection activities: (1) heart disease, lung disease, specified cancers and infectious diseases shall be presumed to be proximately caused by the employee's employment; (2) the disability or death of an employee in fire protection activities due to such a disease shall be presumed to result from personal injury sustained while in the performance of such employee's duty; and (3) such presumptions may be rebutted by a preponderance of the evidence.