Comair:

Ready reserves are 6 hours long.

Max 2 in a row.

Max 6 in a month.

Can only be assigned in domicile.

No seniority on RR (They give assignments out based on who's about to finish, not who's junior)

4:20 credit toward monthly guarantee.

A RR that becomes a 4-hour trip will still only pay 4:20.

A RR assigned at the end of a trip pays 4:20 in addition to the daily credit for that trip.

Start of RR also starts the 13:30 max scheduled duty period.

Pilots with more than 22 years or less than 3 years don't need to worry about RR (They're either furloughed or lineholders)