Can federal workers receive FECA benefits for pre-existing medical conditions that are aggravated or exacerbated by their job duties?

The answer to this question is an absolute YES. FECA and the office of the OWCP takes into account any preexisting conditions, and does not disqualify you from compensation as a result of this. That said, FECA requires that you show, using objective medical evidence, that your condition was exacerbated or made worse by a work activity. In addition, compensation is available even if you had no visible symptoms of the preexisting condition, but then developed these symptoms as a result of the disabling or injurious work condition.