When people talk about a project that isn't finished yet, they often reach for the phrase working progress. It sounds right. But the correct phrase is work in progress, and the two are not interchangeable. One is a real, widely used English idiom; the other is a mistake driven by how the words blend together in speech.
What "work in progress" actually means
Work in progress (sometimes abbreviated as WIP) describes something that has been started but not yet completed. It can refer to a document, a piece of art, a software build, a business deal, or even a person developing new skills. The phrase treats whatever is being discussed as an ongoing task, not a finished product.
The three words carry distinct weight. "Work" is the noun: the task or output itself. "In progress" is the prepositional phrase: it describes the state that work is currently in. Together they form a compound noun that English speakers have used for centuries in both formal writing and everyday conversation.
Some examples of correct use:
- "The report is still a work in progress."
- "Please treat this draft as a work in progress."
- "As a WIP, the design will change before launch."
Why people write "working progress" instead
The error comes from how quickly the phrase gets spoken. "Work in progress" compresses to something that sounds like "working-progress" in casual speech, especially when the speaker drops the word "in." It's the same mechanism behind other common confusions: the ear hears one thing and the hand writes another.
There's also a surface-level logic to it. "Working" is a real word, and "progress" is a real word, so stringing them together doesn't feel wrong. But "working progress" doesn't exist as an idiom in any standard dictionary. It's co-occurrence without meaning. Compare this to similarly common mix-ups like writing "invested interest" instead of "vested interest": the wrong version sounds plausible right up until you examine it closely.
A smaller group of writers produce "a work in progress" correctly but then reach for "working progress" in shorthand, trimming the phrase without realising they've changed it into something meaningless. Short versions do exist: WIP is widely accepted in professional and creative contexts. "Working progress" isn't a shorthand. It's a different phrase, and not a recognised one.
Can "working" ever modify "progress"?
Not in the sense people usually intend. "Working" as an adjective appears in phrases like "working order" (meaning functional) or "working knowledge" (meaning a practical, usable level of familiarity). In those phrases, "working" describes a state of operation. It doesn't extend to "progress."
If you wanted to say that progress is happening, the natural phrasing is "making progress" or "steady progress" or simply "the project is progressing." None of those point to "working progress" as a natural alternative.
Is "work in progress" formal or informal?
Both. The phrase appears in legal documents, financial reporting (manufacturing firms track WIP as a balance-sheet line item), creative industries, software development, and casual conversation. It doesn't carry a register restriction the way some idioms do. You can write it in a business proposal or a text message and it fits either context.
The abbreviation WIP follows the same pattern. It's standard shorthand in project management, game development, and publishing. If you're writing for an audience that knows the context, WIP works cleanly. If there's any chance of ambiguity, spell out "work in progress" in full at first use.
Quick reference: how to remember the correct form
One reliable test: ask what the noun is. The noun is the work. That work exists in progress, meaning it hasn't stopped and hasn't finished. The structure is noun plus prepositional phrase, which is exactly how English builds compound descriptions like "man in motion" or "deal in the making."
"Working progress" reverses the logic by turning "working" into an adjective, but there's no underlying concept it describes. Progress can be slow, rapid, or steady. It isn't "working." Keep the noun at the front, add "in progress," and you're right every time. Like other subtle word-choice errors, this one is worth catching before it reaches a reader, especially in formal writing where precision signals credibility. If you're interested in how similar sound-driven errors happen, the confusion between reeking havoc and wreaking havoc follows the same pattern: a mishearing that produces a phrase which looks plausible until scrutinised.
Summary
Work in progress is the correct phrase. Working progress is a misspelling caused by the way the original phrase sounds when spoken quickly. Use "work in progress" or its abbreviation WIP in any context where you want to describe something started but not yet complete. The Merriam-Webster entry for "work in progress" confirms the standard form and gives a clear definition for reference.