# Why you can’t afford to skip a UX writer
> The words in your product decide whether people finish what they came for. What a UX writer does beyond button labels, what skipping one costs you, and what changes now that AI writes product copy too.
- Author: Lenka Stawarczyk (https://www.lenkastawarczyk.com/en/about)
- Published: October 17, 2026
- Topics: UX Writing, AI
- Article URL: https://www.lenkastawarczyk.com/en/blog/why-you-cant-afford-to-skip-a-ux-writer
The words in your product decide whether people finish what they came for: sign up, pay, fix a typo in a form, come back next week. A UX writer makes sure they can. When nobody owns those words, you pay for it in lost sales, support tickets and returns, usually without seeing where the money went.
I first wrote this article for Medium in 2022. This version is rewritten from scratch, with real numbers, stories from my projects and a new part about AI.
## What does bad UX writing cost?
In 2009, Jared Spool described a checkout form on a large e-commerce site. Before paying, people had to log in or register, and many of them never got any further. The team removed the Register button and added a Continue button with a short note: “You do not need to create an account to make purchases on our site.” The number of customers who completed a purchase went up by 45%, and the site made an extra $300 million in the first year ([The $300 Million Button](https://articles.centercentre.com/three_hund_million_button/)).
That’s an extreme case, but the pattern is everywhere. Baymard Institute found that 98% of e-commerce sites use generic error messages in their forms. In Baymard’s usability tests, people took up to five minutes to fix simple errors because the message didn’t say what was wrong, and some gave up on the purchase altogether ([Baymard Institute](https://baymard.com/blog/adaptive-validation-error-messages)).
Sometimes the cost shows up somewhere else. One of my clients sells medical bras online. Customers kept ordering a size too big, because they went by the size they wear in regular stores, and the shop paid for it twice: in calls to customer care and in returns. The instructions on how to measure yourself were on the site, just easy to miss. We moved them next to the size picker and added a reminder later in the order.
That’s why customer care is the first place I look when we fix a broken flow with words. Which questions do people keep asking, and could the product answer them before anyone has to call?
## What does a UX writer actually do?
Button labels are the part you see. Most of the work happens before a single word lands in the interface. A UX writer:
- **Learns how your users think and talk.** What they’re trying to get done, what worries them and which words they use for things
- **Names things and keeps the names.** If one screen says Orders and another says Reservations, people wonder whether those are two different things. A shared word list prevents that. Intuit publishes [its own](https://contentdesign.intuit.com/resources/word-list/), if you’d like to see one
- **Decides what people need to know now and what can wait.** Information in the wrong step gets skipped. The same sentence in the right step prevents an error
- **Writes the microcopy:** buttons, labels, hints, error messages, empty states, confirmations, emails and notifications
- **Sets the rules in your design system,** so designers, developers and AI can write consistently without a UX writer in every meeting
- **Tests the words with real people.** Watch five people from outside your company use your app and note where they hesitate. What looks obvious to you will be all Greek to them
Error message
Error 123:Form error!!!
What’s 123?Which field?No need to shout.
After
That doesn’t look like an email address. Check for a typo?
The rewrite says what happened and how to fix it.
Some questions can only be answered with words. When Descript asks who you’ll use it with, a lot of people freeze. If I pick a team, will I pay for a team plan? If I pick just me, can I add people later? No icon or layout answers that, so Descript added one sentence: “Don’t worry, you can change this later.”
In bigger teams, the strategic side of this work has its own name: content design. Content designers plan the words across the whole journey, set the product’s voice and look after the rules, while UX writers often work on specific flows with designers and developers. In a smaller team, it’s one person.
## Does your product need its own voice?
Yes, as long as it doesn’t talk the same way everywhere. I split every product into three zones:
- **Critical:** payments, errors, security and anything else that makes people nervous. Here the brand speaks quietly, and clarity and a concrete next step come first
- **Neutral:** navigation, settings, labels and most of the product. Clear and consistent, without decoration
- **Delight:** empty states, success messages and onboarding. People have a moment to spare and nothing can go wrong, so your brand can turn up the volume
Your voice stays the same in all three zones, and only the volume changes. You can hear it in the [sound check on my homepage](https://www.lenkastawarczyk.com/en#pult): the same message about a failed payment in four tones and three channels.
A participant in one of my UX writing trainings once told me about her bank. She was uploading her late relative’s death certificate to close the account, and the bank talked to her in its usual cheerful, playful tone. Moments like that are when a brand has to step back.
Precise words matter most in the critical zone. Once, when I was sending a larger amount of money, my bank promised to credit the payment “in a jiffy.” (The Czech original, “cobydup,” is just as vague.) Just what you want to hear at that moment. So how long is a jiffy?
Payment confirmation
We’ll credit your payment in a jiffy.
How long is a jiffy?
After
We’ll credit your payment within 5 minutes.
When people are nervous, a number calms them down better than a cute word.
## Can’t designers, marketers or AI write it?
They often do, and they can do it well with rules to follow. Designers write a lot of product copy themselves, and with good guidelines they handle most of it on their own. Making that possible is part of a UX writer’s job.
AI is a different story. It drafts a dozen versions of an error message in seconds, and most of them sound fine. But it doesn’t know your users, your terminology, your legal limits or what customer care hears every day. A new copywriter works out what you forgot to tell them. AI makes it up, which is why AI copy without rules sounds like everyone else’s.
The work of a UX writer changes with it. They type less and decide more: they write the rules and examples AI follows, pick the best drafts and catch the sentence that would embarrass you in front of a customer.
## When should a UX writer join?
At the start, while the flow is still on the whiteboard. A UX writer who joins at the end can only fill in the blanks the design left. One who joins early can change the flow so it needs fewer words in the first place.
If a full-time hire isn’t on the table, start smaller: an audit of your key flows, writing guidelines that your team and AI can follow, and a training so everyone knows how to use them.
## Signs you need a UX writer
- Customer care answers the same questions every week
- Your error messages say “Something went wrong”
- The same thing has different names on different screens
- People drop off at the step with a form
- AI writes your product copy and nobody checks it against any rules
- Your app sounds cheerful even when the news is bad
