An EA's objection to paying COP for one of nine reasons provided by regulation is called "controversion". COP may be controverted only if one of the following applies:
1. Disability is a result of occupational disease or illness
2. Claimant's status as an employee is defined by 5 USC 8101 (1) (B) or (E) (volunteers)
3. Employee is neither a citizen nor resident of the US or Canada
4. Injury occurred off EA's premises and the employee was not engaged in official "off premises" duties