If you’ve ever written a report, updated a project status, or worked in manufacturing, you’ve probably wondered whether work in progress or work in process is the better choice.
The two expressions look almost identical, and many people use them interchangeably. That often leads to confusion, especially in professional writing, accounting, project management, and business communication.
The truth is that both work in progress and work in process are correct English expressions, but they are not always used in the same context.
The preferred term depends on your industry, your audience, and what you’re describing. In everyday English, one phrase sounds far more natural, while in manufacturing and accounting, the other may be the preferred technical term.
Understanding the difference can make your writing more accurate and professional.
Whether you’re preparing financial statements, writing a project update, or simply choosing the right phrase in an email, using the correct expression shows attention to detail and improves clarity.
In this guide, you’ll learn the meaning of both phrases, their origins, how professionals use them, the key differences between them, and plenty of real-world examples to help you choose the right one every time.
Quick Answer
Both “work in progress” and “work in process” are correct, but they are used differently.
- Work in progress (WIP) is the most common and natural expression in general English. It refers to something that has started but is not yet finished.
- Work in process is primarily a technical term used in manufacturing, production, inventory management, and accounting to describe partially completed goods moving through a production process.
- If you’re writing for a general audience, work in progress is usually the better choice.
Quick Tip:
Think of work in progress for projects, assignments, construction, books, software, and creative work. Think of work in process for factories, production lines, and inventory accounting.
Work in Progress or Work in Process: Comparison Table
| Feature | Work in Progress | Work in Process |
|---|---|---|
| Meaning | Something started but not yet finished | Goods currently moving through a production process |
| Common Usage | Everyday English and business | Manufacturing and accounting |
| Part of Speech | Noun phrase | Noun phrase |
| Abbreviation | WIP | WIP (in manufacturing) |
| Formality | Neutral to formal | Technical and industry-specific |
| Most Common Context | Projects, construction, writing, software, art | Factories, inventory, production lines |
| Natural in Daily Conversation | Yes | Rare |
| Used in Accounting | Yes | Yes, especially manufacturing accounting |
| Used in Project Management | Very common | Rare |
| Used in Manufacturing | Common | Very common |
| Preferred for Creative Work | Yes | No |
| Preferred for Inventory Reports | Sometimes | Yes |
| Common Mistake | Assuming it only applies to construction | Using it outside manufacturing without reason |
| US vs UK | Widely used in both | Used in both but mainly in technical fields |
| Best Choice for General Writing | ✅ Yes | ❌ Usually no |
What Does “Work in Progress” Mean?
Work in progress refers to anything that has been started but has not yet been completed. It is one of the most widely used expressions in English and appears in everyday conversation, workplaces, education, construction, software development, creative industries, and project management.
The phrase emphasizes that progress is being made, even though the final result is not ready yet.
Definition
A work in progress is an unfinished task, product, project, or piece of work that is actively being developed.
Pronunciation
Work in Progress
/wərk ɪn ˈprɑːɡres/ (American English)
/wɜːk ɪn ˈprəʊɡres/ (British English)
Part of Speech
Noun phrase
Example:
- The new website is still a work in progress.
Origin of “Work in Progress”
The phrase has been used for many decades to describe unfinished work. It became especially common in engineering, construction, publishing, and later in technology and creative industries.
Today, you’ll see signs reading “Work in Progress” at construction sites, software companies, museums, research projects, and even personal development discussions.
Over time, the expression expanded beyond physical work to describe almost anything that is still developing.
Examples include:
- a novel
- a painting
- a software application
- a research paper
- a business strategy
- a personal goal
Grammar of “Work in Progress”
The phrase functions as a noun phrase.
Correct examples:
- This report is a work in progress.
- The bridge remains a work in progress.
- Our new app is still a work in progress.
It usually follows verbs such as:
- is
- remains
- becomes
- looks
- appears
Examples:
- The project is a work in progress.
- The design remains a work in progress.
- Their renovation is still a work in progress.
When to Use “Work in Progress”
Use work in progress whenever you want to describe something that is actively being developed but has not yet been completed.
It is appropriate in many situations.
Business Projects
Examples:
- The proposal is still a work in progress.
- Our marketing strategy is a work in progress.
- The annual report remains a work in progress.
Construction
Construction sites often display signs that read:
Work in Progress
Examples:
- Road repairs are a work in progress.
- The office renovation is still a work in progress.
- The new shopping mall remains a work in progress.
Writing and Publishing
Writers frequently use the phrase.
Examples:
- My novel is a work in progress.
- The article is still a work in progress.
- Her second book remains a work in progress.
Software Development
Technology companies commonly describe unfinished products this way.
Examples:
- The feature is still a work in progress.
- This update is currently a work in progress.
- The mobile app remains a work in progress.
Education
Students often use the phrase for assignments.
Examples:
- My thesis is still a work in progress.
- The science project is a work in progress.
- His presentation remains a work in progress.
Creative Work
Artists, musicians, and designers use the phrase regularly.
Examples:
- This painting is a work in progress.
- The album is still a work in progress.
- The logo design remains a work in progress.
Professional Uses of “Work in Progress”
Professionals across many industries rely on this expression because it communicates that progress is underway without suggesting the work is finished.
You’ll commonly hear it in:
- Architecture
- Engineering
- Construction
- Marketing
- Publishing
- Software Development
- Graphic Design
- Research
- Healthcare Projects
- Education
- Government Planning
Example workplace sentences:
- The implementation plan is still a work in progress.
- Our compliance review remains a work in progress.
- The client dashboard is a work in progress.
These examples sound natural because they describe ongoing efforts rather than completed results.
Everyday Uses of “Work in Progress”
Outside the workplace, work in progress is often used figuratively.
People may use it to describe personal growth, habits, or life goals.
Examples:
- I’m still a work in progress.
- My cooking skills are a work in progress.
- Our garden is a work in progress.
- His confidence is a work in progress.
- Learning English is a work in progress.
In these situations, the phrase doesn’t refer to physical work. Instead, it highlights continuous improvement over time.
Common Collocations with “Work in Progress”
Certain words naturally appear alongside work in progress.
Some of the most common include:
- ongoing work in progress
- major work in progress
- exciting work in progress
- creative work in progress
- project work in progress
- construction work in progress
- software work in progress
- research work in progress
- personal work in progress
- visible work in progress
Using these collocations makes your writing sound more natural and fluent.
What Does “Work in Process” Mean?
Unlike work in progress, work in process is a technical business and manufacturing term. It refers to products that have entered the production cycle but are not yet finished goods. These items have already consumed some materials, labor, and manufacturing costs, but they still require additional processing before they are ready for sale.
Outside manufacturing and accounting, this phrase is much less common. In everyday English, most native speakers naturally choose work in progress instead.
Definition of “Work in Process”
Work in process describes partially completed products that are moving through one or more stages of manufacturing before becoming finished inventory.
It is commonly used in:
- Manufacturing
- Factory operations
- Cost accounting
- Inventory management
- Supply chain management
- Production planning
- Industrial engineering
Pronunciation
Work in Process
American English:
/wərk ɪn ˈprɑːses/
British English:
/wɜːk ɪn ˈprəʊses/
Part of Speech
Noun phrase
Example:
- The factory reported a high value of work in process inventory.
Origin of “Work in Process”
The expression became popular during the rise of industrial manufacturing in the late nineteenth and early twentieth centuries. As factories needed a way to measure products that were neither raw materials nor finished goods, accountants introduced the term work in process.
Today, it remains standard terminology in manufacturing accounting and inventory reporting around the world.
Grammar of “Work in Process”
Like work in progress, this phrase functions as a noun phrase.
Examples:
- The work in process inventory increased this month.
- Our work in process costs exceeded expectations.
- The production manager reviewed the work in process report.
Unlike work in progress, this phrase is usually followed by words such as:
- inventory
- costs
- report
- balance
- valuation
- production
These collocations reflect its technical nature.
When to Use “Work in Process”
Choose work in process when discussing products or materials that are actively moving through a manufacturing process.
Manufacturing
Examples:
- The factory has thousands of units classified as work in process.
- Several machines are producing work in process inventory.
- The assembly line currently contains a large amount of work in process.
Cost Accounting
Accountants regularly calculate the value of work in process.
Examples:
- Labor costs were added to work in process.
- The monthly report showed an increase in work in process inventory.
- Work in process was transferred to finished goods after inspection.
Inventory Management
Inventory specialists use the phrase to monitor production efficiency.
Examples:
- The warehouse tracks work in process every day.
- Managers reduced excess work in process inventory.
- The company improved production by lowering work in process levels.
Supply Chain Management
Examples:
- Delays increased the amount of work in process.
- Better scheduling reduced work in process throughout the factory.
- Suppliers helped minimize work in process inventory.
Professional Uses of “Work in Process”
This phrase is standard in industries such as:
- Automotive manufacturing
- Electronics
- Pharmaceutical production
- Aerospace
- Food processing
- Textile manufacturing
- Chemical production
- Heavy industry
- Industrial engineering
Professionals in these fields understand work in process as a precise accounting and production term rather than a general description of unfinished work.
Everyday Uses of “Work in Process”
In ordinary conversation, work in process is uncommon.
For example:
❌ My homework is a work in process.
Although people will understand the sentence, it sounds technical and unnatural.
A native speaker would almost always say:
✅ My homework is a work in progress.
The same applies to books, paintings, websites, presentations, and personal projects.
Common Collocations with “Work in Process”
You’ll often see these combinations in manufacturing documents:
- work in process inventory
- work in process account
- work in process costs
- work in process balance
- work in process report
- work in process materials
- work in process valuation
- work in process production
- work in process units
- work in process department
These collocations rarely appear in general English.
Work in Progress or Work in Process: Key Differences
Although the two phrases are closely related, they are not interchangeable in every situation.
Purpose
- Work in progress describes any unfinished task, project, or creative work.
- Work in process describes partially completed goods in a manufacturing process.
Audience
- Work in progress is understood by everyone.
- Work in process is mainly used by accountants, manufacturers, engineers, and production managers.
Tone
- Work in progress sounds natural and conversational.
- Work in process sounds technical and industry-specific.
Frequency
- Work in progress is far more common in books, newspapers, websites, emails, and daily speech.
- Work in process appears mostly in manufacturing reports, inventory systems, and accounting documents.
Best Choice
Use work in progress when talking about:
- projects
- assignments
- software
- books
- artwork
- presentations
- renovations
- research
- websites
- personal development
Use work in process when talking about:
- factory production
- manufacturing
- inventory
- accounting
- production costs
- assembly lines
- unfinished goods
Are They Interchangeable?
Not usually.
While both phrases refer to something that is unfinished, their contexts differ.
For example:
✅ The bridge is a work in progress.
❌ The bridge is a work in process.
Another example:
✅ The factory has $250,000 in work in process inventory.
This sentence is perfectly natural because it refers to manufacturing inventory.
Replacing it with work in progress inventory may still be understood, but many manufacturers and accountants prefer work in process because it matches industry terminology.
Why Do People Confuse Them?
There are several reasons these phrases are often mixed up.
1. They Share the Same Abbreviation
Both expressions are commonly shortened to WIP, making it easy to assume they mean exactly the same thing.
2. Both Describe Something Unfinished
At their core, both phrases refer to work that has not yet been completed. The difference lies in where and how they are used.
3. Software and Business Tools
Many project management platforms, inventory systems, and enterprise software use the abbreviation WIP without spelling out the full phrase. Depending on the industry, WIP may mean either work in progress or work in process.
4. Regional and Industry Preferences
Some organizations use work in progress for all unfinished work, while manufacturing companies often reserve work in process for inventory accounting.
Grammar Explanation
Although the comparison is mainly about usage, grammar also plays a role.
Parts of Speech
Both expressions are noun phrases.
Examples:
- The report is a work in progress.
- The inventory includes work in process.
Articles
Use a when referring to one unfinished project.
Examples:
- It is a work in progress.
- The sculpture is a work in progress.
When referring to manufacturing inventory, the phrase often appears without an article because it behaves like a mass noun.
Example:
- The company reduced work in process inventory.
Plural Form
You may occasionally see:
- works in progress
This refers to multiple unfinished projects.
Example:
- Several works in progress were displayed at the exhibition.
The plural works in process is uncommon outside technical documentation.
Capitalization
Capitalize the phrases only when they are part of a title or heading.
Correct:
- Work in Progress
- Work in Process
Within normal sentences, use lowercase unless your style guide says otherwise.
Example:
- The presentation is still a work in progress.
Hyphenation
Neither phrase normally requires hyphens.
Correct:
- work in progress
- work in process
Avoid forms such as:
- work-in-progress (except when used as a compound adjective before a noun in some editorial styles)
Example:
- a work-in-progress novel
Many style guides accept this adjectival form, but the noun phrase remains unhyphenated.
Style Guide Recommendations
Major dictionaries and editorial references recognize work in progress as the standard expression for unfinished work in general English.
Business, accounting, and manufacturing literature commonly uses work in process when referring to inventory that is still being produced.
Rather than treating one phrase as universally correct, professional editors choose the version that best matches the context and the intended audience.
Real-Life Examples of Work in Progress and Work in Process
The easiest way to understand the difference is to see both phrases in real situations. Below are original examples covering conversations, business, emails, education, manufacturing, social media, and everyday English.
Everyday Conversation
- Our kitchen renovation is still a work in progress.
- Don’t judge the painting yet—it’s a work in progress.
- My Spanish is a work in progress, but I’m improving every day.
- The garden is a work in progress after the winter storms.
- His confidence is a work in progress, and that’s perfectly okay.
Business
- The marketing strategy is a work in progress and will be finalized next week.
- The product launch plan remains a work in progress.
- Our finance team reviewed the work in process inventory before closing the month.
- The factory reduced work in process costs by improving production efficiency.
- Management approved additional funding to reduce excess work in process inventory.
Email Writing
- The presentation is still a work in progress, so I’ll send the final version tomorrow.
- Please review the attached draft. It’s a work in progress, and I welcome your feedback.
- According to today’s report, work in process inventory increased by 12%.
- The accounting department has updated the work in process balance.
School and University
- My research paper is still a work in progress.
- The science project remains a work in progress until we complete the final experiment.
- Her dissertation is a work in progress, but the first chapters are excellent.
Professional Writing
- The policy document is a work in progress and will be published after legal approval.
- Engineers inspected all work in process before the next production stage.
- The company reported lower work in process inventory compared with the previous quarter.
Social Media
- New website coming soon. It’s still a work in progress.
- Behind every success is a lot of work in progress that nobody sees.
- Every masterpiece starts as a work in progress.
Manufacturing
- The assembly line currently holds more than 500 units of work in process.
- Raw materials become work in process once production begins.
- Quality inspectors examined every work in process item before packaging.
Common Mistakes
Many English learners—and even native speakers—mix up these phrases. Here are some of the most common mistakes and how to avoid them.
| Incorrect Sentence | Why It’s Wrong | Correct Sentence |
|---|---|---|
| My essay is a work in process. | Sounds too technical for everyday English. | My essay is a work in progress. |
| Our friendship is a work in process. | “Work in process” isn’t used for personal relationships. | Our friendship is a work in progress. |
| The factory stores work in progress inventory. | Manufacturing usually prefers “work in process inventory.” | The factory stores work in process inventory. |
| My new app is work in progress. | Missing the article “a.” | My new app is a work in progress. |
| We have many work in progresses. | Incorrect plural form. | We have several works in progress. |
Warning:
If you’re writing for a general audience, using work in process may sound overly technical. In most cases, work in progress is the safer and more natural choice.
Memory Tricks
Here are a few simple ways to remember which phrase to use.
Trick 1: Think About the Audience
- General readers? → Work in Progress
- Factory managers or accountants? → Work in Process
Trick 2: Remember the Letter “P”
- Progress = Projects
- Process = Production
If it’s about a project, use work in progress.
If it’s about production, use work in process.
Trick 3: Everyday vs. Technical
- Everyday English → Work in Progress
- Manufacturing English → Work in Process
Trick 4: Construction Signs
When you see a sign at a road or building site, it almost always says:
Work in Progress
That’s a helpful reminder that this is the standard phrase in everyday English.
Quick Summary
| Question | Answer |
|---|---|
| Are both phrases correct? | ✅ Yes. |
| Are they interchangeable? | ❌ Not always. |
| Which is more common? | Work in Progress |
| Which is used in manufacturing? | Work in Process |
| Which should I use in emails and reports? | Usually Work in Progress, unless discussing manufacturing inventory. |
| Which sounds more natural? | Work in Progress |
Frequently Asked Questions (FAQs)
Is “work in progress” or “work in process” correct?
Both are correct. Work in progress is the standard choice for general English, while work in process is mainly used in manufacturing, production, and accounting.
Which phrase is more common?
Work in progress is far more common in everyday speech, business communication, education, media, and professional writing.
Is “work in process” incorrect?
No. It is a legitimate technical term, especially in manufacturing and inventory accounting. It simply isn’t the natural choice for most everyday situations.
Can I use “work in process” for a project?
You can, but it may sound unusual to most readers. For projects, reports, presentations, books, software, and creative work, work in progress is the preferred expression.
What does WIP stand for?
WIP can stand for either Work in Progress or Work in Process. The intended meaning depends on the context.
Is there a difference between accounting and everyday English?
Yes. Accountants and manufacturers often use work in process to describe partially completed inventory. Outside those fields, work in progress is the standard phrase.
Which phrase do style guides prefer?
Most dictionaries and editorial style guides treat work in progress as the standard expression for unfinished work. Manufacturing and accounting references continue to use work in process for technical accuracy.
Is “work in progress” used in both American and British English?
Yes. Work in progress is widely recognized and commonly used in both American and British English.
Final Verdict
If you’re deciding between work in progress or work in process, the answer depends on what you’re talking about.
Choose work in progress when referring to unfinished projects, creative work, research, software, assignments, construction, presentations, or personal development.
It is the most familiar and natural expression in everyday English and professional communication.
Choose work in process when discussing partially completed goods in a manufacturing environment. It is the preferred term in production management, inventory control, and cost accounting because it accurately describes products moving through the manufacturing process.
For most readers and writers, work in progress will be the right choice. If your audience works in manufacturing or finance, work in process may be the more precise term.
The key is not deciding which phrase is “better” but understanding which one fits the context. Using the appropriate expression makes your writing clearer, more professional, and more accurate.
Bottom Line:
- Work in Progress = Best for general English, projects, and unfinished tasks.
- Work in Process = Best for manufacturing, production, and inventory accounting.
Ghulam Qamar is an English grammar writer and language enthusiast dedicated to simplifying complex grammar concepts. He creates clear, practical, and beginner-friendly content that helps learners improve their English writing, speaking, and communication skills.
