From personal experience having pumped for an infant as a pediatric
resident, chief resident and faculty member, I don't think you have to be
at all organized to pump at work - just committed. You pump when you can -
just as you go to the bathroom when you can. Yes it is best to pump at
"normal nursing times" to keep up your supply, but just as we preach
"breastfeeding on demand" so should pumping be on demand. If you feel full
and you have 5-10 free minutes - DO IT. The amount of each pumping is not
important its what you do during the entire time that you are gone. Your
body can adjust to all sorts of things. Principles to remember:

1:Going too long HURTS so you are unlikely to totally forget.
2:Supply generally dwindles during the course of the week but easily picks
up with a good weekend with the baby
3:Pumping at home also help to assure that you have enough in the house if
you had a bad day pumping at work. Pumping while nursing saves time and at
least logically should have the advantages of increasing prolactin that
double pumping or tandem nursing does.(when they are older it gets harder
because they pull on the cord)
4:While electic pumps are great, I always ALSO had a manual pump on hand in
case I needed to pump in a place without electricity (I get sore hands from
manual expression)

Deena R. Zimmerman MD MPH