Is there a company policy against commuting on day 1 and day (last) of your work schedule?

For example:
Day 1 - Show at (random) 10am until (random again) 9p
Day 2 - 7am-9p
Day 3 - Same
Day 4 - 7a - say noon(?)

I think I've heard a few of the Northern New York schedules (ART maybe?) are built something like that (this is all just a WAG).

If so, and you could find something to commute early day 1 (meaning enough flights to make it reasonably possible) to be in position at 10am, is there a company policy that would prohibit that or is it just a matter of making sure you're rested, safe and legal to fly?

-mini