Once OWCP has advised the employee that it has accepted a claim and has either approved continuation of pay or paid medical benefits or compensation, benefits will not be terminated or reduced unless the weight of the evidence establishes that:

1. (a) The disability for which compensation was paid has ceased;
2. (b) The disabling condition is no longer causally related to the employment;
3. (c) The employee is only partially disabled;
4. (d) The employee has returned to work;
5. (e) The beneficiary was convicted of fraud in connection with a claim under the FECA, or the beneficiary was incarcerated based on any felony conviction; or
6. (f) OWCP's initial decision was in error.