“Labor” and “labour” are two spellings of the same English word. Use labor in American English and usually labour in British, Australian, and New Zealand English; Canadian English commonly uses labour, although some Canadian compounds and institutional names use labor. Choose the form that matches your audience, publication, or official name.
Key Facts at a Glance
- Labor is the standard spelling in American English.
- Labour is standard in British, Australian, and New Zealand English.
- Canadian English generally prefers labour, including in “labour market” and “labour union.”
- Both forms can mean work, a workforce, strenuous effort, or childbirth.
- Pronunciation is normally the same, with the first syllable stressed.
- Do not alter an official name such as Labour Party, Labor Party, or Labor Day.
Is Labor or Labour Correct?
Both labor and labour are correct spellings. The correct choice depends on the variety of English being used and the identity of the organization, publication, holiday, or quoted source.
American publishers, universities, businesses, and government agencies normally write labor. British, Australian, and New Zealand publishers normally write labour. Canadian usage is predominantly labour, but local style guides and proper names can create exceptions.
The difference is the same spelling pattern seen in other words ending in -or and -our, such as color/colour, favor/favour, and honor/honour. American English generally uses the shorter -or form, while many Commonwealth varieties retain -our.
| Situation | Preferred spelling | Example |
|---|---|---|
| US business report | labor | Labor costs increased 4% |
| UK employment report | labour | Labour costs increased 4% |
| Australian medical writing | labour | The patient entered labour |
| Canadian economics article | labour | The labour market tightened |
| Official US party name | Labor | Democratic Labor Party |
| Official UK party name | Labour | Labour Party |
How Do American and British English Differ?
American English uses labor, while British English uses labour. The distinction applies to ordinary prose, compounds, and derived forms, although proper names retain their official spelling.
A US company might publish a report titled Labor Market Conditions. A British company would more likely use Labour Market Conditions. Neither form signals a different economic theory, employment system, or medical process.
The spelling rule also affects related words:
| American English | British or Commonwealth English | Meaning |
|---|---|---|
| laborer | labourer | Person who performs physical work |
| laborious | laborious | Requiring substantial effort |
| labor-saving | labour-saving | Reducing human work |
| labor market | labour market | Supply and demand for workers |
| labor union | labour union | Organized worker association |
| organized labor | organised labour | Collective worker movement |
The ending does not always change. Laborious and labourious are not equally common alternatives: standard British dictionaries generally use laborious, despite the noun being spelled labour. Writers should therefore check the complete word rather than mechanically replace every letter sequence.
Which Countries Spell It Labour?
The -our spelling is standard in the United Kingdom, Australia, New Zealand, and most Canadian contexts. The -or spelling is standard in the United States.
Language geography is a strong default, not an absolute rule for every document. An Australian article quoting a US statute should preserve the statute’s spelling, and a British article referring to the official US holiday should write Labor Day.
| English variety or setting | Usual form | Example |
|---|---|---|
| United States | labor | The labor force grew |
| United Kingdom | labour | The labour force grew |
| Australia | labour | Labour law applies |
| New Zealand | labour | Labour productivity changed |
| Canada, general prose | labour | The labour shortage worsened |
| International organization | Style-dependent | Follow the organization’s guide |
The Oxford English Dictionary records the historical relationship between the forms, while modern style guides localize spelling according to national usage. Geography therefore determines the default, but editorial authority determines the final decision.
What Does Canadian English Prefer?
Canadian English generally prefers labour, colour, favour, and honour. Canadian government, academic, and news writing commonly uses expressions such as labour force, labour market, and labour legislation.
Canada also has important exceptions. Official names, trademarks, quoted material, and some institutional titles use labor. For example, a Canadian organization may retain an American spelling in the name of a cross-border program or an inherited brand.
Canadian writers should follow the applicable authority in this order:
- Preserve a legal name, registered trademark, or direct quotation.
- Follow the employer, university, client, or publication style guide.
- Use labour for ordinary Canadian prose when no guide applies.
- Avoid switching spelling because a browser or word processor uses US English.
Canadian English is not simply a midpoint between British and American English. It has its own conventions, and individual terms can differ from both neighboring systems.
Are Labor and Labour Pronounced Differently?
Labor and labour are normally pronounced identically. In standard English pronunciation, the word has two syllables, with the main stress on the first: LAY-bur.
The pronunciation does not usually change between American and British English because the extra u is a spelling difference, not a separate sound. Regional accents can alter the vowel or the final unstressed syllable, but those differences occur within speech varieties rather than between the two spellings.
| Feature | Labor | Labour |
|---|---|---|
| Syllables | 2 | 2 |
| Main stress | First syllable | First syllable |
| Typical US notation | /ˈleɪbɚ/ | Rare in US prose |
| Typical UK notation | /ˈleɪbə/ | /ˈleɪbə/ |
| Meaning | Same | Same |
The same principle applies to laboratory/laboratory only partially, because that word has different regional pronunciations. Spelling alone does not reliably predict pronunciation across English vocabulary.
What Does the Word Mean?
Labor or labour has four closely related meanings: human work, the workforce, strenuous effort, and the biological process of childbirth. Context identifies the intended meaning.
As a noun, the word can describe work itself, the people available to work, or the process of giving birth. As a verb, it can mean working with difficulty, exerting effort, or progressing slowly.
| Meaning | Grammatical role | Example |
|---|---|---|
| Human work | Noun | Labor produces goods and services |
| Workforce | Noun | Skilled labor is difficult to recruit |
| Strenuous effort | Verb | She labored over the calculation |
| Difficult movement | Verb | The truck labored uphill |
| Childbirth | Noun or verb | The patient went into labor |
Economic writing often uses labor as an uncountable noun: “labor is a factor of production.” A specific person may be called a worker, employee, or laborer, depending on the role and level of formality.
Which Spelling Fits Childbirth?
Use labor for childbirth in American English and labour in British, Australian, New Zealand, and usually Canadian English. The medical meaning is identical in both forms.
Clinical labor describes the process in which uterine contractions produce cervical effacement and dilation, followed by birth and delivery of the placenta. Medical professionals commonly divide it into stages, although exact labels and stage boundaries can vary between health systems.
| Childbirth stage | Main event | Typical clinical marker |
|---|---|---|
| First stage | Cervical effacement and dilation | 0-10 cm dilation |
| Second stage | Birth of the baby | Fully dilated cervix |
| Third stage | Placental delivery | Placenta separates and exits |
| Fourth stage | Immediate recovery | Commonly first 1-2 postpartum hours |
Early labor can be irregular and prolonged. Active labor usually involves stronger, more regular contractions, but duration varies substantially by person, parity, induction method, analgesia, and clinical complications. A medical decision should come from a qualified maternity professional, not from a spelling guide.
Why Are Labor Day and Labour Day Different?
Labor Day is the US federal holiday observed on the first Monday in September. Labour Day is the name used in many other countries, including Canada, where it is also observed on the first Monday in September.
The spelling follows the local variety of English, but the holiday’s history and legal details differ by country. Australia and New Zealand also use Labour Day, though their dates vary by state or territory and are not generally the same as the US date.
| Place | Holiday name | Typical date |
|---|---|---|
| United States | Labor Day | First Monday in September |
| Canada | Labour Day | First Monday in September |
| New Zealand | Labour Day | Fourth Monday in October |
| Western Australia | Labour Day | First Monday in March |
| Victoria, Australia | Labour Day | Second Monday in March |
| New South Wales, Australia | Labour Day | First Monday in October |
A US writer should not change Labour Day in a Canadian quotation to Labor Day. Holiday names function as proper names in context.
Which Compound Words Change Spelling?
Most compounds change from labor to labour when the surrounding English variety changes. Writers should check whether the compound is ordinary descriptive language or a fixed institutional name.
| US compound | Commonwealth compound | Definition |
|---|---|---|
| labor law | labour law | Rules governing employment |
| labor shortage | labour shortage | Insufficient available workers |
| labor force | labour force | People working or seeking work |
| labor dispute | labour dispute | Conflict between workers and management |
| labor-intensive | labour-intensive | Requiring substantial human work |
| labor-saving | labour-saving | Reducing required human work |
Some derived forms retain -or in British usage, especially established words such as laborious. Other forms are not interchangeable: laboratory, labourer, and laborer each require attention to the local dictionary and style guide.
A practical editing rule is to search the document for both forms, then verify each occurrence against the publication’s language setting and any proper-name exception.
How Should Writers Choose?
Writers should choose labor for a US audience and labour for a British, Australian, New Zealand, or general Canadian audience. The strongest deciding factor is the document’s primary readership, not the writer’s nationality.
Apply these rules when the audience is mixed:
- Use the client’s or publisher’s house style.
- Use the spelling expected by the country named in the page title.
- Preserve official names, trademarks, laws, and quotations.
- Keep one variety consistent within ordinary editorial prose.
- Set the proofing language to English (US), English (UK), English (Canada), or the relevant national option.
- Do not localize a quotation unless you clearly mark an editorial change.
Websites and Search Optimization
A website should normally localize spelling to its target market. A US employment page should use labor market, while a UK page should use labour market.
Search engines generally understand the relationship between the variants, so repeating both forms throughout a page is unnecessary. A short clarification such as “labor, also spelled labour in British English” captures the semantic connection without making the copy look mechanically optimized.
Academic Writing
Academic writers should follow the journal, department, or referencing style. APA Style commonly uses US English in US contexts, while a British university may require British spelling throughout a dissertation.
A paper can discuss a British source using labour while the author’s surrounding US prose uses labor, provided the difference belongs to the source title, quotation, or proper name. Consistency applies to the writer’s prose, not to historical evidence that must be reproduced accurately.
Legal, Government, and Corporate Writing
Legal and government writers must preserve the spelling in legislation, agency names, contracts, and registered entities. A spelling alteration can make a title look inaccurate even when the underlying meaning remains clear.
For internal corporate documents, the organization’s style guide controls. A multinational company may maintain separate US and UK templates because terms such as labor law, labour law, employment law, and industrial relations carry different regional expectations.
Can You Mix the Spellings?
You can mix labor and labour in one document only when a legitimate source or proper name requires it. Mixing them randomly makes the document appear unedited and can trigger incorrect spell-check suggestions.
For example, this sentence is acceptable in a US report: “The report compares US labor policy with the UK Labour Party’s proposal.” The first form follows US prose; the second preserves an official UK name.
This sentence is poor editorial practice: “Our labour strategy reduces labor costs across the organization.” Unless the company has deliberately defined separate regional terminology, one spelling system should be selected.
When Is Labour a Proper Name?
Labour is a proper-name spelling in organizations such as the UK Labour Party. Labor appears in official names such as the Australian Labor Party and some US political party names.
Proper names override ordinary regional spelling rules. Writers should copy the organization’s official capitalization and spelling from its own published materials or a reliable government register.
| Name | Country or context | Correct form |
|---|---|---|
| Labour Party | United Kingdom | Labour |
| Australian Labor Party | Australia | Labor |
| Labor Party of Australia | Historical or regional reference | Verify exact title |
| Labor Day | United States | Labor |
| Labour Day | Canada and many Commonwealth contexts | Labour |
The noun’s ordinary meaning does not determine the organization’s name. Institutional identity does.
Common Mistakes With Labor and Labour
The most frequent mistake is treating one variant as universally correct. Labor is not an error in American English, and labour is not an error in British English.
Other mistakes arise when writers overlook context:
- Changing a proper name: Editing Labour Party to Labor Party creates a factual error.
- Mixing house styles: Alternating forms suggests inconsistent proofreading.
- Replacing every suffix mechanically: Words such as laborious may not follow the expected pattern.
- Localizing quotations: A source’s spelling should remain intact.
- Ignoring the audience: A UK recruitment page using labor market may look foreign to its readers.
- Trusting software blindly: A US spell checker can flag correct Canadian or British forms.
The fastest correction method is to identify the target English variety, search for both spellings, isolate proper names and quotations, and then run a final consistency check.
FAQ
Is Labour More Correct Than Labor?
Neither spelling is inherently more correct. Labor is correct in American English, while labour is correct in British, Australian, New Zealand, and usually Canadian English. Official names can override those defaults, so the correct form may depend on the organization or holiday being named.
Does Canada Use Labor or Labour?
Canada generally uses labour in government, academic, business, and media writing. Canadian English still contains exceptions involving trademarks, official names, imported US terminology, and individual style guides. When no authority specifies otherwise, labour market and labour law are the safer Canadian choices.
Is Labor a British Word?
Labor is an English word used in American English, while British English normally spells it labour. British writing uses the short form in some fixed names or imported references, but ordinary British prose generally uses the -our spelling.
Should I Use Labor or Labour on a Global Website?
Use the spelling that matches the page’s primary audience, then explain the alternative once if international readers may search for it. A site with separate regional pages can use labor on US pages and labour on UK, Canadian, Australian, and New Zealand pages.
Is It Labor Union or Labour Union?
Use labor union in American English and labour union in British, Australian, New Zealand, and usually Canadian English. The terms refer to the same type of worker organization. Preserve the spelling used in an organization’s official title or quoted source.
Is Labour the Same as Work?
Labour can mean work, but the words are not interchangeable in every sentence. Work is broader and often neutral, while labour can emphasize physical effort, economic production, a workforce, or childbirth. Context determines which noun or verb is precise.
The Bottom Line
The answer to is it labour or labor is geographic: write labor for American English and labour for British, Australian, New Zealand, and most Canadian English. Keep the selected form consistent, preserve quotations and official names, and remember that both spellings have the same meanings and usual pronunciation.
