Hmmm...that's odd. I can only assume that that "time bonus" refers to the times that you finished in under 8 hours,ie., if you had a 9 hour plan day and finished in 7.5, your time card would show the breakdown as:
7.5 x straight time
.5 x time bonus (regular rate)
1.0 x production bonus (overtime rate)
I have no clue as to why they are doing that, they don't it like that in here Virginia. Per the example above, our timecards break it down as:
8.0 x straight time
1.0 x production bonus (overtime rate)