J.R.
Hi,
I have pumped with both of my children at work, if there is not an empty office a bathroom can work. My advice to you is to get an eletric dual pump, it really cuts time. It also depends on how long you are planning to pump but you can rent them or buy them, I bought mine but it has also made it through 15 months of breast feeding with my first and 11 months with my second, I have worked full time after them both :) and now it is ready for baby #3. I wish you all the luck, I know it is hard but is worth it in the end!
J.. ( let me know if I can help you out any more)