As the FO if your log book replicates the times submitted by your Captain in thier voyage report and the CAA or FAA takes exception to the companys practise. They will have bigger fish to fry than spanking a FO's bum for thier log book.
To be honest as long as you don't apply for your ATPL bang on the min hours or very near it they don't seem to look at your log books to closely. I applied with at least 10% over all requirments and got the ATPL by nearly return post.