Boy - just when I thought I had it straight in my head, here comes another curve! Redy, I understood the logging requirement of 7 days prior was set by the FMCSA, which makes it federal law, so how can your company say that one day prior is all that you need?
On the subject of following HOS when not logging - it seems to be left up to the drivers. Some don't pay much attention, substituting common sense, & knowledge of their own tolerance. Like any "one size fits all" policy, it's often not a very good fit - there are days when I feel I can drive more hours, and days when I can't get in the groove at all. Since it didn't seem to occur to whomever decided the issue of acceptable hours behind the wheel that we're all different, even the same person on different days, I don't want to log. The same goes for sleeping - sometimes I just can't sleep more than 6 hrs at a time, but every now & then I'll sleep 10. All the regulations in the world won't change that.