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Pumping, Bottles & Back to Work

How to keep breastfeeding when maternity leave ends and your baby starts daycare.

You do not have to choose between breastfeeding and going back to work. With a little planning — a bottle introduced in good time, a small freezer stash, and your legal right to pump during work hours — milk can keep travelling between you, the pump and daycare. Here is the logistics, warmly and honestly.

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A parent packing labelled bottles of expressed breast milk and a pump into a bag beside a daycare backpack.

Last updated: 23 July 2026

Back to work, still breastfeeding

The end of maternity leave can feel like the end of breastfeeding — but it does not have to be. Thousands of parents in the Netherlands combine work and breast milk every day, and the law is on your side while you do it.

This guide picks up where our breastfeeding guide left off: your baby is here, feeding is going, and now real life is knocking. It walks you through the transition month, your rights at work, what to pack, and how daycare takes over the feeds you can't be there for — including the honest bits nobody warns you about.

Introduce a bottle 2–4 weeks before daycare starts — not the week before
You have a legal right to pump or feed during work hours in your baby's first 9 months (kolfrecht)
A small freezer stash beats a big one — you need a buffer, not a warehouse
Combination feeding is real feeding: every drop of breast milk counts

The transition month, step by step

Give yourself about four weeks of runway before daycare starts. The goal isn't to change everything at once — it's to add a bottle and a small stash gently, so nothing has to happen in a panic on the first morning.

  1. Step 1 — Introduce the bottle early

    ≈ 4 weeks before

    Offer the first bottle of expressed milk around 2–4 weeks before daycare, once breastfeeding is well established. Start with one bottle every few days — not to replace a feed, but to teach the skill of drinking from a teat. Earlier isn't always better; too early can unsettle a young latch.

  2. Step 2 — Let someone else offer it

    The single biggest tip

    Many babies refuse a bottle from the breastfeeding parent — they can smell the real thing and hold out for it. So hand the bottle to your partner, a grandparent or a friend, and leave the room (sometimes the house). This is normal, it is not rejection, and it is exactly what daycare will do: someone who isn't you, offering milk you're not there to give.

  3. Step 3 — If the bottle is refused, try tactics — not force

    Evidence-honest

    Bottle refusal is common and there is no guaranteed fix — but things worth trying: offer when baby is calm and only lightly hungry (not starving), warm the teat under running water, try a slow-flow teat, a different teat shape, or a different feeding position. Some babies take a cup, spoon or a soft feeder instead of a bottle entirely. If nothing works at home, know that daycare staff are experienced and babies very often drink for them when they won't for family.

  4. Step 4 — Build a small freezer stash

    A buffer, not a warehouse

    Add one short pumping session after a morning feed (mornings are usually your most abundant) and freeze what you collect in small portions. Aim for enough to cover the first daycare day or two plus a little slack — a handful of bags, not a chest freezer full. You'll mostly feed daycare with milk pumped the day before, so the stash is a safety net, not the main supply.

  5. Step 5 — Do a practice run

    The week before

    In the last week, rehearse the real rhythm once or twice: pump at the times you'll pump at work, have your caregiver give a bottle at roughly a daycare feed time, and pack the bag the way you'll pack it. A dry run turns a dozen unknowns into a routine you've already done.

  • Your baby learns the bottle without time pressure
  • You find out early if refusal is going to be a theme — with weeks to work on it
  • A small stash means one sick day or missed pump won't derail you
  • The first daycare morning feels rehearsed, not improvised

Your right to pump at work (kolfrecht)

In the Netherlands you have a legal right to breastfeed or express milk during working hours in your baby's first 9 months (kolfrecht, laid down in the Arbeidstijdenwet). Your employer must make this possible — this is your right, not a favour. The exact conditions are set out officially; check the current details on rijksoverheid.nl.

What the law broadly gives you

  • The right to pump or feed during work hours, in your baby's first 9 months
  • A suitable, private and lockable space to do it (not the toilet)
  • This time generally counts as paid working time — see rijksoverheid.nl for the exact limits
  • The right to arrange it in reasonable consultation with your employer

Arranging it smoothly

  1. Tell your employer in good time before you return — ideally a few weeks ahead
  2. Ask where the space is and check it's private and lockable, with a fridge nearby if possible
  3. Agree roughly when your pumping breaks will fall around your workday
  4. Put the practical agreements in writing (an email is enough) so everyone is clear
  5. If your workplace pushes back, point them to the Arbeidstijdenwet rules on rijksoverheid.nl

The practical kit

Three things make the daily logistics painless: a pumping bag you can grab without thinking, a safe way to keep and move milk, and clearly labelled bottles for daycare. Here's what goes into each.

Your pumping-at-work kit

Pack it once, restock weekly

A ready-to-go bag means one less thing to think about on a busy morning. Keep it packed and topped up so you never leave a part behind.

  1. Your pump, with charged battery or charger/cable
  2. A spare set of pump parts and valves (a rinse isn't always possible mid-day)
  3. Clean collection bottles or bags
  4. A cool bag with ice packs for the trip home
  5. Wipes or a small bottle brush, plus a hand towel
  6. A photo of your baby — it genuinely helps let-down

Storing & transporting milk

Follow the official times

Breast milk keeps safely for set times at room temperature, in the fridge and in the freezer, and there are simple rules for cooling, thawing and warming it. These times matter, so use the official source rather than memory: the Voedingscentrum lists current guidance for storing and transporting expressed milk.

  • Label every portion with the date it was expressed
  • Freeze in small portions to avoid waste on partial feeds
  • Move milk in a cool bag with ice packs
  • Never re-freeze thawed milk; check the Voedingscentrum for exact times

What daycare needs from you

Labelled & clear

Daycare can only feed your milk safely if it arrives clearly labelled and with simple instructions. Bring each day's bottles named and dated, tell your mentor how much your baby usually takes, and agree how leftover milk is handled. When in doubt, ask your group's mentor what they prefer.

  1. Name and date on every bottle
  2. A note of your baby's usual feed amounts and rough timings
  3. Enough milk for the day, plus one spare portion
  4. Your contact details in case they run short

How daycare feeds your milk

It helps to picture what happens to your milk once it arrives. Daycare stores it, warms it and gives it to your baby — and how they time those feeds is something you shape together with your mentor.

From bag to baby

  • Your labelled bottles go straight into the fridge on arrival
  • Milk is warmed gently in warm water, not boiled or microwaved
  • Each baby's milk is kept separate and matched to the right child
  • Leftover milk is handled by the group's food-safety rules

On-demand or on a schedule?

  • Younger babies are usually fed on demand — when they show hunger cues
  • As babies grow, feeds often settle into a looser rhythm with the group
  • Tell your mentor your baby's usual pattern so they can follow it closely
  • It's a conversation, not a fixed rule — adjust together as your baby changes

In the first weeks, lean on your mentor. They've helped many families through exactly this transition and can tell you how your baby is really doing with the bottle while you're apart.

Weaning with love — and no guilt

Plenty of parents come back to work sure it will all fall apart — the bottle refused, the supply gone, the breastfeeding over. Far more often, it simply settles: baby drinks for daycare, you feed at home morning and evening, and the two of you find a rhythm that works. However your feeding journey ends, it counts, and you get to choose the pace.

Combination feeding is real feeding

  • Breast at home, bottle at daycare is a normal, sustainable pattern
  • Mixing breast milk and formula is a valid choice — every drop still counts
  • Your supply usually adjusts to the feeds you keep, so dropping a pump is fine
  • Fed, loved and thriving matters more than any single method

If and when you wean

  1. Drop one feed or pump at a time, every few days, to let your body adjust
  2. Start by dropping a mid-day pump; keep the morning and evening breastfeeds longest
  3. Watch for full or tender breasts and ease off more slowly if needed
  4. There's no deadline — wean when it's right for you, not when others expect it

Frequently asked questions

My baby refuses the bottle from me — what can I do?

This is common and rarely a sign anything is wrong. Babies often hold out for the breast when they can smell you nearby. The single most effective move is to let someone else offer the bottle while you leave the room. Beyond that, tactics worth trying — not forcing — include offering when baby is calm and only lightly hungry, warming the teat, changing the teat shape or flow, or switching position. None of these is guaranteed, but daycare staff are experienced and babies very often drink for them when they won't for family.

My supply seems to dip once I'm back at work. Is that normal?

A small dip is common — stress, a busier day and pumping instead of a baby at the breast can all nudge output down. It usually recovers. Pump at regular times rather than skipping, empty well (hands-on massage helps), stay hydrated, and add a weekend nursing session or two. If the dip worries you or continues, a lactatiekundige can help you troubleshoot.

How much milk should I leave at daycare each day?

As a starting point, leave roughly what your baby would drink across the hours you're apart, split into the number of feeds they'll have, plus one spare portion. Your mentor will soon tell you whether your baby drinks more or less than that, and you can adjust. Small portions waste less.

Do I have to pump at exactly the times my baby feeds at daycare?

Not exactly, but roughly matching your baby's feed times helps keep your supply and comfort in sync and prevents you getting overly full. What matters most is pumping regularly across your workday rather than saving it all up.

We have twins — does anything change?

The principles are the same, just doubled: two babies means more milk to express and more bottles to label, so a double pump and a slightly bigger stash help. Introduce the bottle to both in good time, and know that twins don't always take to it at the same pace — that's normal. Our twins breastfeeding guide covers building and holding a supply for two.

Where to get help

You don't have to figure the logistics out alone. These people and places can help with feeding, pumping and your rights at work.

About this guide

This guide is for educational purposes and is not medical or lactation advice. For personal questions about feeding, supply or your baby's health, check with your lactatiekundige, the consultatiebureau (JGZ) or your huisarts. The details of your rights at work can change over time — always check the current rules on rijksoverheid.nl.

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