Cover Driver doing Sat Airs

[DriveInDriveOut]

I punch a different code into the DIAD Saturdays. I'm normally 3C as a Cover Driver. Would my 6th day be considered all overtime being over 40?

I only know what we do here under the Southern supplement.
3C is the code for Cover without a guarantee, that's what I use Saturdays.
4C is Cover with 8hr guarantee, that's what I use M-friend.
Time and half after 40 straight pay hours is the law.