Labor and labour are two spellings of the same word, but the right choice depends on your audience. In the United States, labor is the standard spelling. However, in British English, labour is preferred.
The difference is not about meaning. Instead, it comes down to regional spelling rules. For example, American English usually drops the u in words like labor, color, and favor, while British English keeps it in labour, colour, and favour.
Therefore, if you are writing for a US audience, labor is the correct choice. If your audience follows British English, use labour. The only major exception is official names, which should always keep their original spelling.
Quick Answer
For US English, use labor.
For British English, use labour.
Both spellings mean the same thing. However, they belong to different spelling systems. In most American writing, labour can look incorrect or inconsistent. Meanwhile, in UK writing, labor usually looks Americanized.
Correct US examples:
- The company reduced labor costs.
- The labor market is changing quickly.
- She went into labor early Monday morning.
Correct UK examples:
- The company reduced labour costs.
- The labour market is changing quickly.
- She went into labour early Monday morning.
In short, match the spelling to your audience and keep it consistent throughout the article.
Labor Vs. Labour At A Glance
| Question | Correct Choice |
|---|---|
| Standard US spelling | Labor |
| Standard UK spelling | Labour |
| Meaning | Same word, same core meanings |
| Pronunciation | Usually the same |
| US past tense | Labored |
| UK past tense | Laboured |
| US present participle | Laboring |
| UK present participle | Labouring |
| US worker noun | Laborer |
| UK worker noun | Labourer |
| Major exception | Laborious, not labourious |
| Proper names | Keep the official spelling |
What Do Labor And Labour Mean?
Labor and labour can refer to work, effort, workers, or childbirth. They can also work as verbs meaning to work hard, struggle, or move with difficulty.
For example, in American English, you would write:
“The repair required two days of labor.”
“The report discusses labor shortages.”
“She went into labor before sunrise.”
“They labored for months to complete the project.”
In British English, the same examples would use labour:
“The repair required two days of labour.”
“The report discusses labour shortages.”
“She went into labour before sunrise.”
“They laboured for months to complete the project.”
As these examples show, the meaning stays the same. The spelling changes only because the writer is using a different variety of English.
Why Americans Use Labor
American English usually simplifies many -our endings to -or. As a result, US writers use labor, color, honor, favor, and behavior.
This spelling pattern is standard in American schools, newspapers, government writing, legal documents, business reports, medical content, and everyday communication. Therefore, if your article, email, report, or website targets US readers, labor is the safest and most natural spelling.
For instance, American readers expect phrases like:
- labor market
- labor costs
- labor laws
- labor union
- child labor
- manual labor
- go into labor
- Department of Labor
- Labor Day
Using labour in ordinary US writing may distract readers. It can look like a typo, a British spelling, or an editing inconsistency.
Why British English Uses Labour
British English keeps the u in many words where American English does not. Therefore, UK writers use labour, colour, honour, favour, and behaviour.
In British English, labour is the normal spelling in business, politics, healthcare, law, education, and general writing. For example:
“The company is reviewing labour costs.”
“The UK labour market remains competitive.”
“She went into labour at 4 a.m.”
“The Labour Party announced its plan.”
Because British readers expect the u, the spelling labor can look Americanized in UK copy. However, proper names and direct quotations should still keep their original spelling.
Which Spelling Should You Use?
Use labor if your audience is mainly in the United States.
Use labour if your audience is mainly in the UK or follows British English.
For international writing, choose one style before you begin. Then, apply it consistently across the full article, website, report, or document. If your brand has a style guide, follow that guide rather than switching spellings from section to section.
For example, a US company should write:
“Our labor costs increased this quarter.”
A UK company should write:
“Our labour costs increased this quarter.”
Both sentences are correct. However, each one fits a different audience.
Labor And Labour As Nouns
As a noun, labor/labour can describe work, workers, effort, or childbirth.
Work Or Effort
US: “The project required months of labor.”
UK: “The project required months of labour.”
In this sense, the word refers to physical or mental effort.
Workers Collectively
US: “The factory relies on skilled labor.”
UK: “The factory relies on skilled labour.”
Here, the word refers to workers as a group or workforce.
Childbirth
US: “She was in labor for six hours.”
UK: “She was in labour for six hours.”
In medical and everyday contexts, the spelling still depends on the variety of English. Therefore, US medical content should use labor, while UK medical content should use labour.
Economics And Employment
US: “The labor market added new jobs.”
UK: “The labour market added new jobs.”
In economics, the word often appears in phrases such as labor market, labor force, labor supply, and labor demand.
Labor And Labour As Verbs
As a verb, labor/labour means to work hard, struggle, or move with effort.
US examples:
“They labored all weekend to repair the roof.”
“The old truck labored up the steep hill.”
“He labored under the belief that the deadline had changed.”
UK examples:
“They laboured all weekend to repair the roof.”
“The old truck laboured up the steep hill.”
“He laboured under the belief that the deadline had changed.”
Additionally, the phrase labor the point or labour the point means to explain or argue something for too long.
US: “You do not need to labor the point.”
UK: “You do not need to labour the point.”
Related Forms And Spellings
The spelling difference continues in most related forms. Therefore, US English uses labored, laboring, and laborer, while British English uses laboured, labouring, and labourer.
| US English | British English |
|---|---|
| labor | labour |
| labored | laboured |
| laboring | labouring |
| laborer | labourer |
| labor union | labour union |
| labor market | labour market |
| labor costs | labour costs |
| manual labor | manual labour |
| child labor | child labour |
Examples:
US: “The workers labored through the night.”
UK: “The workers laboured through the night.”
US: “Her breathing sounded labored.”
UK: “Her breathing sounded laboured.”
US: “The company hired several laborers.”
UK: “The company hired several labourers.”
The Important Exception: Laborious
One related word does not follow the usual pattern: laborious.
The correct spelling is laborious in both American and British English. Do not write labourious.
Correct:
“The approval process was laborious.”
“She worked laboriously through the old records.”
Incorrect:
“The approval process was labourious.”
“She worked labouriously through the old records.”
This exception is easy to miss because many writers assume every related word should change from labor to labour in British English. However, laborious keeps the same spelling in both forms of English.
Proper Names: Keep The Official Spelling
Proper names do not always follow normal regional spelling rules. For that reason, you should never change an official name just to match US or UK spelling.
For example, in the United States, the correct name is:
U.S. Department of Labor
In the UK, the correct political party name is:
Labour Party
In Australia, the correct party name is:
Australian Labor Party
This can seem confusing because Australian English usually uses labour in ordinary writing. Nevertheless, the political party officially uses Labor, so that spelling must stay.
Correct:
“The U.S. Department of Labor announced new guidance.”
“The Labour Party responded to the proposal.”
“The Australian Labor Party released its platform.”
Incorrect:
“The U.S. Department of Labour announced new guidance.”
“The Labor Party responded to the proposal.”
“The Australian Labour Party released its platform.”
In short, regional spelling rules apply to ordinary words. Official names, however, should be copied exactly.
Common Phrases In US And UK English
| Meaning | US English | British English |
|---|---|---|
| Employment market | labor market | labour market |
| Cost of workers | labor costs | labour costs |
| Physical work | manual labor | manual labour |
| Punishment or difficult work | hard labor | hard labour |
| Workers’ organization | labor union | labour union |
| Employment rules | labor laws | labour laws |
| Child workforce issue | child labor | child labour |
| Giving birth | go into labor | go into labour |
| Public holiday | Labor Day | Labour Day, where officially used |
| Group of available workers | labor force | labour force |
Is It Labor Day Or Labour Day?
In the United States, the correct spelling is Labor Day.
That is the official American spelling and should be used in US calendars, retail campaigns, school notices, business announcements, and news articles.
Example:
“The office will be closed on Labor Day.”
In British-style contexts, Labour Day may appear when that is the official or expected spelling for a specific holiday or event. Therefore, check the local name before changing it.
Example:
“The Labour Day event attracted thousands of workers.”
Again, official names matter. Do not automatically convert a holiday name unless you are sure the spelling should change.
Is It Child Labor Or Child Labour?
Use child labor in American English.
Use child labour in British English.
Both phrases describe the same issue. The difference is only spelling.
US: “The report examines child labor laws.”
UK: “The report examines child labour laws.”
If you are writing for an international organization, check its preferred style. Some global organizations use British spelling, while others use American spelling.
Is It Manual Labor Or Manual Labour?
Use manual labor for US readers.
Use manual labour for British English readers.
Examples:
US: “The job requires heavy manual labor.”
UK: “The job requires heavy manual labour.”
The same rule applies to similar phrases, including skilled labor/labour, migrant labor/labour, domestic labor/labour, and organized labor/organised labour.
Is Labour Wrong In American English?
In ordinary American writing, labour is not the standard spelling. Therefore, it can look incorrect or inconsistent to US readers.
However, labour is acceptable in American writing when it appears in a quote, title, official name, or discussion of British spelling.
Correct in US writing:
“The article used the British spelling ‘labour.’”
“She wrote about the UK Labour Party.”
“The report quoted a British source on labour conditions.”
Not recommended in ordinary US writing:
“The company reduced labour costs.”
“She went into labour last night.”
For an American audience, those should be:
“The company reduced labor costs.”
“She went into labor last night.”
Is Labor Wrong In British English?
In ordinary British English, labor is not the standard spelling. It usually looks American.
However, labor is correct when it appears in an official name, quoted source, or American title.
Correct in UK writing:
“The U.S. Department of Labor released a statement.”
“The Australian Labor Party won the seat.”
“The source used the American spelling ‘labor.’”
Not recommended in ordinary UK writing:
“The company reduced labor costs.”
“She went into labor.”
For a British audience, those should be:
“The company reduced labour costs.”
“She went into labour.”
Examples By Context
Business Writing
US: “Rising labor costs affected the company’s margins.”
UK: “Rising labour costs affected the company’s margins.”
Economics
US: “The labor market remained strong.”
UK: “The labour market remained strong.”
Law And Policy
US: “The bill would change state labor laws.”
UK: “The bill would change labour laws.”
Healthcare
US: “The patient went into labor before her due date.”
UK: “The patient went into labour before her due date.”
Construction
US: “The estimate includes materials and labor.”
UK: “The estimate includes materials and labour.”
Academic Writing
US: “The paper studies organized labor in the 1930s.”
UK: “The paper studies organised labour in the 1930s.”
Politics
US: “The Department of Labor issued new guidance.”
UK: “The Labour Party responded to the proposal.”
Australia: “The Australian Labor Party announced its candidate.”
Common Mistakes To Avoid
Mixing Both Spellings In One Article
Incorrect:
“The labor market depends on skilled labour.”
Correct for US English:
“The labor market depends on skilled labor.”
Correct for British English:
“The labour market depends on skilled labour.”
Consistency is important because mixed spelling makes the article look poorly edited.
Changing Official Names
Incorrect:
“U.S. Department of Labour”
Correct:
“U.S. Department of Labor”
Incorrect:
“Australian Labour Party”
Correct:
“Australian Labor Party”
Official names should stay exactly as written, even when they do not match your usual spelling style.
Using Labour In US Medical Writing
Incorrect in US English:
“She went into labour.”
Correct in US English:
“She went into labor.”
Using Labor In UK Medical Writing
Incorrect in British English:
“She went into labor.”
Correct in British English:
“She went into labour.”
Writing Labourious
Incorrect:
“The process was labourious.”
Correct:
“The process was laborious.”
Although labour is British, labourious is not correct.
SEO Guidance: Which Spelling Should You Target?
For SEO, choose the spelling your target audience is most likely to search and expect.
If your page is for US readers, use labor as the main spelling. You can still mention labour in the title, introduction, and FAQ because people often compare both forms. However, the body should use American phrases naturally, such as labor market, labor law, labor costs, manual labor, and go into labor.
If your page is for UK readers, use labour as the main spelling. In that case, labor can appear when you explain the American variant.
For global audiences, include both spellings early. Then, choose one spelling style for the rest of the article based on your brand guide or primary market.
Most importantly, do not stuff both spellings into every sentence. Readers want a clear answer, not repeated keywords.
Simple Rule For Editors
The safest editorial rule is simple: match your audience, stay consistent, and never change official names.
Use labor for American English.
Use labour for British English.
Keep official names exactly as written.
This rule solves almost every common spelling problem involving labor and labour.
Frequently Asked Questions
Is labor or labour correct in the US?
Labor is correct in the US. American English uses labor in phrases such as labor market, labor law, labor costs, manual labor, and go into labor.
Is labour a misspelling?
No. Labour is not a misspelling. It is the standard British spelling. However, it can look incorrect in ordinary US writing unless it appears in a quote, title, or official name.
Do labor and labour mean the same thing?
Yes. Labor and labour mean the same thing. They can refer to work, effort, workers, or childbirth. The only difference is regional spelling.
Should I write labor or labour for childbirth?
Use labor in US English and labour in British English. The childbirth meaning does not change the spelling rule.
Is it labor market or labour market?
Use labor market for US English. Use labour market for British English.
Is it child labor or child labour?
Use child labor in American English and child labour in British English. Both phrases refer to the same issue.
Is it manual labor or manual labour?
Use manual labor for US readers and manual labour for British English readers.
Is it Labor Day or Labour Day?
In the United States, the holiday is Labor Day. In other countries or British-style contexts, use Labour Day only when that is the official or expected spelling.
Is laborious spelled labourious in the UK?
No. The correct spelling is laborious in both American and British English. Labourious is incorrect.
Should proper names follow US or UK spelling rules?
No. Proper names should keep their official spelling. Write U.S. Department of Labor, UK Labour Party, and Australian Labor Party.
Conclusion
For a US audience, write labor. For a British English audience, write labour. The two spellings have the same meaning and usually the same pronunciation, but they follow different spelling conventions.
Therefore, the best choice depends on your readers. Use labor in American content, use labour in British English content, and keep official names exactly as they appear.
