Duty involving physical hardship
Duty involving physical hardship means duty that may not in itself be hazardous, but causes extreme physical discomfort or distress and is not adequately alleviated by protective or mechanical devices, such as duty involving exposure to extreme temperatures for a long period of time, arduous physical exertion, or exposure to fumes, dust, or noise that causes nausea, skin, eye, ear, or nose irritation.
5 CFR § 550.902
In this subpart: Agency has the meaning given that term in 5 U.S.C. 5102(1).