The extent to which employers prorate health insurance costs by employee hours and the means by which prorating is achieved are explored next.
First, they may arise indirectly from the fact that part-time employees are less likely to participate in available benefit plans--either because they are less likely to meet tenure-related eligibility requirements, or because they are more likely to decline coverage.(7) Also, prorating may result from specific employer policies--for example, employers may require higher premium contributions from part-time employees.
The appeals court upheld the BOP procedure that used the amount of time actually served by the prisoner, rather than the sentence imposed, as the basis for prorating
good time credit available to the prisoner in his last year of imprisonment.