I have a friend who is preparing to return to work (out of the home) full time in about two weeks. She is committed to pumping. This is her third child, so the pump and milk supply are not new to her. She told me about an herb, fenugreek, that is helping her increase her milk supply to store up milk for when she goes back to work. (She was my very first Modest Middles customer and wears the same Modest Middles nursing tanks to this day!)  I linked an article above from a lactation consultant about fenugreek just FYI. Being able to work at home, I am lucky to have to worry about pumping a huge supply, but I know it's a major issue for many of my friends and customers. Let me know if you've had any experience with fenugreek or another solution that might help working moms.