How to pump at work
By The Zomee Team · Updated September 25, 2026 · 5 min read
While you're apart from your baby, the CDC suggests pumping about as often as your baby drinks breast milk. Keep your milk in a refrigerator or an insulated cooler with frozen ice packs. Before your first day, ask your employer where you'll pump.
A long meeting will sometimes cost you a session. As Kristen Hunter, IBCLC, puts it, "Consistency over time is what matters."
How often should I pump at work?
About every 2 to 3 hours. La Leche League International says most moms find that pumping this often keeps them from getting uncomfortably full. For an 8-hour workday, its example is to nurse your baby before work, then pump mid-morning, at lunchtime, and mid-afternoon.
If you nurse right before you leave and again when you're back together, you usually only need to pump for the hours in between. Block each session on your work calendar as a recurring event.
If stepping away is hard in your job, a wearable pump lets you keep working while you pump. The Zomee Fit is worn inside your bra, and its fullness sensor detects when the milk collector is full to help prevent spills. If you're still choosing a pump, the pump quiz asks three questions and suggests a Zomee pump for your routine.
Before your first day back
The CDC suggests practicing with your pump before you return. Check your flange fit while you do: the tip of your nipple should feel comfortable and move freely, without rubbing, pinching, or pulling.
If none of the sizes included with your Zomee pump fits, our Perfect Fit Promise™ sends a pair in the size you need, free.
The CDC also suggests these steps:
- Talk with your employer: Ask where you'll pump, where you can store milk and clean pump parts, and which times work best for your sessions.
- Freeze milk ahead: Build a stash of frozen milk before you go back. Our guide to building a freezer stash covers how.
- Practice with a bottle: Once breastfeeding is going well, practice giving your baby your milk in a bottle.
Do I have a right to pump at work?
Most likely, yes. The U.S. Department of Labor says most nursing moms are entitled to reasonable break time and a private space to pump at work for up to one year after their baby's birth. That break time applies each time you need to pump.
These protections come from the Fair Labor Standards Act, as expanded by the PUMP for Nursing Mothers Act. The space can't be a bathroom. It must be shielded from view and free from intrusion from coworkers and the public.
Employers with fewer than 50 employees may be exempt if providing the breaks and space would cause undue hardship. State and local laws can add more protections, so ask HR what applies to you.
What goes in my pump bag?
Our pump bag checklist has the full list. Pack these the night before:
- Your pump, charged, and its charging cables or adapter
- A second set of pump parts
- Bottles or storage bags, and a pen for labels
- An insulated cooler with frozen ice packs
- Dish soap, a brush, and cleaning wipes
- A pumping bra, if you'll pump hands-free
How do I keep pumped milk cold at work?
In a refrigerator, or in an insulated cooler with frozen ice packs. The CDC says expressed breast milk is a food, so you can store it alongside other foods in the office refrigerator.
Label each bottle or bag with your name and the date you pumped, as the CDC recommends. If the milk goes to childcare, add your baby's name too.
For the trip home, our Packable Breast Milk Cooler and Storage Bottles includes a cooler bag, two ice packs, and four storage bottles with caps.
Here's how long freshly pumped milk keeps, according to the CDC:
| Where | How long |
|---|---|
| Room temperature (77°F or colder) | Up to 4 hours |
| Insulated cooler with frozen ice packs | Up to 24 hours |
| Refrigerator (40°F) | Up to 4 days |
| Freezer (0°F or colder) | Best within 6 months, up to 12 months acceptable |
How do I clean pump parts at work?
Wash them in warm water with mild dish soap after every session, and let them air-dry thoroughly. The CDC recommends cleaning pump parts that touch your breast or breast milk as soon as possible after pumping.
Tools like our Breast Pump Cleaning Wipes can help when there's no sink nearby. Even so, the CDC, citing the FDA, says parts that touch breast milk still need a wash with dish soap and warm water before you use them again. A second set of parts gives you clean ones for your next session.
For extra germ removal, the CDC recommends sanitizing pump parts at least once daily, after you clean them. That matters most if your baby is less than 2 months old, was born prematurely, or has a weakened immune system.
For older, healthy babies, the CDC says daily sanitizing may not be necessary if you clean the parts carefully after each use. To sanitize, steam the parts in the microwave or a plug-in steam system, or boil them for 5 minutes, and check Zomee's care instructions first.
Where to get help
Call The Mom Line™ at 1-888-662-7159 for pump, sizing, parts, and support questions. Real moms and certified lactation consultants answer it.
If your output drops or you have feeding concerns, talk to a lactation consultant (IBCLC). For pain or fever, call your provider. For questions about your rights at work, start with HR or call the U.S. Department of Labor's Wage and Hour Division at 1-866-487-9243.
Questions moms ask
Does my employer have to pay me for pumping breaks?
Not always. Under federal law, pump breaks can be unpaid if you're completely relieved from duty. If you keep working while you pump, or you pump during a paid break, the time must be paid.
Do I have to pump in a bathroom at work?
No. For most nursing moms, federal law says the space can't be a bathroom, even a private one. It doesn't have to be a dedicated lactation room, though: the U.S. Department of Labor says a private space made available when you need it counts.
How long can breast milk stay in a cooler bag?
Up to 24 hours in an insulated cooler bag with frozen ice packs, according to the CDC. Once you're home, use the milk right away, refrigerate it, or freeze it.
Can I store pump parts in the fridge between sessions?
Only when you can't wash them after a session. The CDC says you can rinse the parts, seal them in a bag, and refrigerate them for a few hours, though no studies have shown this is a safe alternative to washing. The W1's warming breast shields are hand washed only.
What if my output drops after I go back to work?
Check your parts and your fit first. Duckbill valves stretch and diaphragms can tear with regular use, so replace both every 1 to 3 months, or every 2 to 3 months for W1 diaphragms. If pumping feels different or your output stays low, measure again and talk to a lactation consultant (IBCLC).
