Returning to Work & Pumping: An IBCLC's Complete Guide

Written by Jennifer Chivas, RN, BSN, IBCLC — Founder, Lactation Loop

Going back to work is one of the biggest breastfeeding transitions families face — and it's also one of the most common reasons families reach out to an IBCLC. The good news: with the right plan, most moms can keep breastfeeding successfully once they're back on the job. Here's what actually helps.

Know Your Legal Rights

Under the PUMP Act (an amendment to the Fair Labor Standards Act's break-time requirements), most employers are required to provide reasonable break time and a private space — not a bathroom — for pumping, for up to one year after your baby's birth. This applies to nearly all FLSA-covered employees, including many who weren't covered before the law expanded in December 2022.

Source: U.S. Department of Labor — PUMP Act for Nursing Mothers

Before You Go Back: A Timeline

• 5-6 weeks before: Introduce a bottle once a day if you know you'll need one for work — starting now instead of waiting until the day of (or a few days before) helps prevent bottle refusal. One bottle a day plus one early-morning pump after nursing goes a long way toward heading off issues before they start. Talk to your IBCLC about bottle type and positioning, since both affect how well baby takes to it.

• 3-4 weeks before: Talk to your employer about your pumping space and schedule so it's settled well ahead of your first day back, not figured out on the fly.

• 1-2 weeks before: Start building a small freezer stash — you don't need hundreds of ounces, just a few days' buffer for the first week back.

Building Your Pumping Schedule

A good starting point is to pump roughly as often as your baby was nursing during work hours — for most moms on a standard 8-hour shift, that's about every 2-3 hours, or 3-4 pumping sessions. The goal is to match your baby's usual routine as closely as possible so your supply doesn't dip.

How Much Milk Does My Baby Need at Daycare?

A commonly used estimate is about 1 to 1.5 ounces per hour your baby is away from you, though every baby is different. If you're not sure, tracking a few days of actual daycare intake is the most reliable way to know your real number.

Storing & Transporting Milk from Work

• Pro tip: I recommend pumping directly into glass bottles — your baby's actual bottles with lids work great for this. Glass reduces the risk of contamination that can come with switching containers, like transferring milk into plastic bags or steel containers. If you don't have glass on hand, safe plastic baby bottles are a fine alternative.

• If you prefer plastic storage bags — often helpful if you're producing more than you need or tight on fridge/freezer space — that's perfectly fine too. Just be sure to label each bag clearly with the date pumped, and follow the same storage guidelines below.

• Use an insulated cooler bag with ice packs for the commute home — per ABM guidelines, milk stored around 59°F in a cooler can safely stay cool for up to 24 hours, well beyond the length of a normal commute.

• Once home, refrigerate promptly — ABM guidelines note milk is good in the fridge for about 4 days optimally, up to 5–8 days under very clean handling conditions — or freeze it.

Source: ABM Clinical Protocol #8: Human Milk Storage Information for Home Use

Talking to Your Employer

You're legally entitled to a private space and reasonable break time — you don't need to over-explain or apologize for needing it. A short, direct conversation with HR or your manager before your return date usually heads off any confusion once you're back.

Keeping Your Supply Up

It's normal for supply to dip slightly in the first week or two of a new schedule. Staying consistent with your pump times — even when it's tempting to skip one on a busy day — is the single biggest factor in keeping supply steady. If you're seeing a real, sustained drop, that's a good time to check flange sizing and pump fit rather than assume it's just the transition.

One practical tip: using a heating pad on your lap or shoulders while pumping can help raise your overall body temperature, which may support letdown and increase production — without applying heat directly to the breast.

Going back to work is typically stressful for all mothers. It's emotional, and the first week back is the hardest. With proper set up and emotional support, most mothers go back and find their groove quickly. Having a few check-ins each day with your baby — or looking at pictures and videos — can ease any concerns and bring the joy you feel when with your baby to the forefront of your day, protecting the love hormone, which is part of good milk production and let-down.

Related reading: Breast Pump Flange Sizing: An IBCLC's Complete Guide, How to Increase Milk Supply: What Actually Works

Frequently Asked Questions

How often should I pump when back at work? Aim to pump roughly as often as your baby was nursing during those hours — for most moms on a standard 8-hour shift, that's about every 2-3 hours, or 3-4 pumping sessions. Matching your baby's usual routine as closely as possible helps protect your supply.

What's your favorite milk storage container? Glass baby bottles — they're my go-to recommendation for the reasons above: less risk of contamination from switching containers, and you're already using them for feedings anyway.

Do I have to tell my employer I'm breastfeeding? No — but letting them know ahead of time about your break needs usually makes the transition smoother for everyone.

What if my workplace doesn't have a private pumping space? Under the PUMP Act, your employer is required to provide one — a bathroom doesn't count. If this comes up, it's worth a direct conversation with HR.

If I had to take a four-hour stretch, which time of day reduces my risk of reduced supply? The afternoon is generally your best bet if you need to stretch a gap — morning supply tends to be higher and more sensitive to skipped sessions, so protecting your morning pump matters most.

Insurance & Booking

Insurances we work with include Aetna, Cigna, United Healthcare (UHC), UMR, Meritain, Anthem, Wildflower, The Lactation Network, Curative, Tricare Select, BCBS of Texas, Blue Cross Blue Shield PPO, VA CCN, and some HMO plans. Check your specific plan at lactationloop.com/insurance-information. Sliding scale service is available upon request.

Booking is easy! Simply visit lactationloop.com and select your preferred visit type — in-home, in-office or virtual.

Questions about your BCBS, Anthem or Florida Blue coverage? Email us at billing@lactationloop.com or text 941-254-2502 and we'll help you verify your benefits!