Labor or Labour: Correct Spelling, Meaning, and Usage

Labor and labour are the same word, but their spelling depends on the region and audience. Labor or Labour: Correct Spelling, Meaning, and Usage explains this simple difference clearly. In American English, labor is the standard spelling, while British English uses labour. This spelling variation follows regional spelling rules.

Both forms can mean work, effort, workers as a group, a workforce, or the process of giving birth. American writing uses labor costs and labor union, while British content uses labour costs and labour party. Examples also include color and colour, or favor and favour, showing how American spelling often drops the u.

For a US audience, choose labor. For a British audience, choose labour. This improves clarity, writing accuracy, and audience trust in exams, emails, formal writing, academic writing, and online content. Official names remain an important exception because their original spelling should stay unchanged.

Quick Answer:

Labor is the correct spelling in American English.

Labour is the correct spelling in British English.

Spelling	English variety	Common meaning
labor	American English	Work, effort, workers, or childbirth
labour	British English	Work, effort, workers, or childbirth
laboring	American English	Working hard or making strenuous effort
labouring	British English	Working hard or making strenuous effort
labored	American English	Worked or struggled with effort
laboured	British English	Worked or struggled with effort
laborer	American English	A person who performs physical work
labourer	British English	A person who performs physical work

Cambridge Dictionary identifies labor as the US spelling of labour and labour as the UK spelling of labor. Both forms cover meanings related to work, workers, effort, and childbirth.

So, if you’re writing for a US audience, remember this simple rule:

American English = labor
British English = labour

What Does Labor Mean?

Labor is the standard American English spelling. It works as both a noun and a verb, and its meaning changes slightly depending on context.

As a noun, labor can refer to physical work, difficult effort, workers as a group, or the process of childbirth. As a verb, it means to work hard or struggle to accomplish something.

Labor as Work or Physical Effort

One of the most common meanings of labor involves work that requires physical or sustained effort.

For example:

• The construction project required a great deal of labor.
• The price includes materials and labor.
• Farming once depended heavily on manual labor.
• The machine reduced the amount of human labor required.

This meaning appears frequently in business, construction, manufacturing, agriculture, and economics.

Merriam-Webster defines labor broadly as physical or mental effort, particularly when the effort is difficult or demanding. It also uses the word for services performed by workers and for human activity that produces goods or services.

Labor as Workers

Labor can also refer to workers collectively, especially workers who perform physical jobs or work for wages.

For example:

• The factory needs more labor during the busy season.
• Skilled labor can be difficult to find.
• The company is trying to reduce labor costs.
• The industry relies on a large pool of available labor.

In economics and business, you’ll often see terms such as labor force, labor costs, labor market, and labor productivity.

Here, labor doesn’t mean one specific person. It describes workers or the human effort they provide.

Labor and Childbirth

Another major meaning appears in medical and everyday language.

In American English, labor refers to the process of giving birth.

Common expressions include:

• go into labor
• be in labor
• labor pains
• early labor
• active labor

For example:

She went into labor early in the morning.

This meaning has nothing to do with employment. Context tells you which sense of labor is intended. Cambridge Dictionary lists childbirth as a separate noun meaning for the word.

Labor as a Verb

Labor can also function as a verb meaning to work hard or struggle physically or mentally.

For example:

• The workers labored through the afternoon.
• The rescue team labored to clear the debris.
• She labored over the report for several hours.
• The truck labored up the steep hill.

Merriam-Webster also records the verb labor for moving or progressing with great effort.

The verb often carries a stronger sense of effort than the ordinary word work. You might work on a project casually, but if you labor over it, the wording suggests sustained effort.

What Does Labour Mean?

Labour is the standard British English spelling of labor.

It carries the same major meanings. British writers use labour for work, physical effort, workers, and childbirth. The word can also act as a noun or verb.

Labour as Work

In British English, labour can describe practical work, particularly work involving physical effort.

For example:

• The price includes parts and labour.
• The farm depends on manual labour.
• The project requires skilled labour.
• The cost of labour has increased.

Notice that the meaning hasn’t changed. Only the spelling has.

Labour as Workers

British English also uses labour to describe workers as a group.

Common expressions include:

• skilled labour
• unskilled labour
• cheap labour
• manual labour
• labor market in American English versus labour market in British English

Cambridge Dictionary specifically lists skilled labour and unskilled labour as examples of this meaning.

Labour as Childbirth

British English uses labour when referring to childbirth.

For example:

She went into labour at midnight.

Other common expressions include:

• in labour
• go into labour
• labour pains
• early labour

Again, American English normally writes labor in these expressions.

Labour as a Verb

In British English, labour can also mean to work hard or make a difficult effort.

For example:

• They laboured for hours to finish the building.
• She laboured over the final chapter.
• The team laboured to complete the repairs.
• The workers laboured through difficult conditions.

Cambridge lists labour as a verb meaning to do hard physical work or to do something with substantial physical or mental effort.

Labor vs. Labour: What’s the Difference?

The central difference is spelling convention, not ordinary meaning.

American English	British English
labor	labour
labor force	labour force
labor costs	labour costs
manual labor	manual labour
skilled labor	skilled labour
labor union	labour union
laboring	labouring
labored	laboured
laborer	labourer
labor pains	labour pains

The pattern extends beyond this single word. American English often removes the u found in several British spellings.

Compare:

• color / colour
• favor / favour
• honor / honour
• neighbor / neighbour
• behavior / behaviour
• labor / labour

This pattern doesn’t mean American English changed the meaning of these words. It reflects differences in spelling conventions.

Why Do American English and British English Spell It Differently?

The spelling difference comes from the broader history of English spelling.

Labour entered English through French and ultimately traces back to Latin labor. Merriam-Webster dates the first known English use of labor to the 14th century.

Over time, English developed different spelling conventions in Britain and the United States. American spelling became more streamlined in several areas, especially in words ending in -our.

That produced pairs such as:

• labour → labor
• colour → color
• favour → favor
• honour → honor

The important point is that modern writers don’t need to understand the entire history to choose the right form. Your audience and style guide usually settle the question.

Labor or Labour in American English

If you’re writing in American English, use labor.

This applies to ordinary writing as well as professional and academic contexts.

Examples

• The company reduced its labor costs.
• Manual labor can be physically demanding.
• The country has a large labor force.
• She went into labor several weeks early.
• The workers labored throughout the night.
• The machine reduced the need for manual labor.

Using labour in an otherwise American English article isn’t necessarily incomprehensible. Readers will understand it. However, it creates a spelling inconsistency and can make the writing look as though it follows British conventions.

For a US-focused website, labor is the cleaner choice.

Labour or Labor in British English

If you’re writing in British English, use labour.

For example:

• The company needs more skilled labour.
• The project has high labour costs.
• Manual labour remains important in the industry.
• She went into labour during the night.
• The workers laboured through difficult conditions.

British publications, educational materials, and organizations generally follow British spelling conventions unless they have a specific house style.

Labor vs. Labour in Common Expressions

Some phrases appear frequently enough that they’re worth learning as complete units.

American English	British English
manual labor	manual labour
skilled labor	skilled labour
unskilled labor	unskilled labour
labor costs	labour costs
labor force	labour force
labor union	labour union
labor market	labour market
labor pains	labour pains
in labor	in labour
labor of love	labour of love

These aren’t separate vocabulary items. They’re the same expressions adapted to different spelling systems.

A Useful Example

Imagine a US business article says:

The company expects labor costs to rise next year.

A British publication would normally write:

The company expects labour costs to rise next year.

The sentence means the same thing. The spelling changes to match the variety of English.

Laboring or Labouring?

The same American-British distinction appears when labor becomes laboring.

American English uses:

labor → laboring

British English uses:

labour → labouring

Examples:

• American: The team was laboring to meet the deadline.
• British: The team was labouring to meet the deadline.

Cambridge lists labouring as the present participle of the British verb labour.

The difference is predictable. Once you know which spelling system you’re using, the related form becomes much easier to remember.

Labored or Laboured?

The past-tense forms follow the same pattern.

American English: labored

British English: laboured

Examples:

• The workers labored for several hours.
• The workers laboured for several hours.

Both sentences describe the same action.

This pattern appears in many other -or/-our words that form related verbs. The safest approach is to keep your spelling system consistent instead of switching between varieties.

Laborer or Labourer?

A laborer is a person who performs physical work, particularly work that doesn’t require specialized training.

American English spells the word:

laborer

British English spells it:

labourer

For example:

• American: The laborer carried materials across the construction site.
• British: The labourer carried materials across the construction site.

The distinction is purely orthographic in this context.

What About “Laborious”?

Here’s an important detail that can trip up learners.

The standard word is laborious, not labourious, in both American and British English.

Laborious means requiring considerable time, effort, or hard work.

For example:

Manually checking thousands of records is a laborious process.

Unlike labor/labour, this word doesn’t normally switch to labourious in British English.

That’s a useful distinction to remember:

Word	American English	British English
Main noun	labor	labour
Verb	labor	labour
Present participle	laboring	labouring
Past tense	labored	laboured
Worker	laborer	labourer
Adjective	laborious	laborious

Labor and Labour in Proper Names

Proper names require a little more care.

If an organization officially uses Labour in its name, don’t automatically change it to Labor simply because the surrounding article uses American English.

For example, British political references use Labour as part of the official name Labour Party. Cambridge lists the Labour Party as the British political party associated with workers’ rights and social equality.

Australia provides another interesting example. The Australian political party is called the Australian Labor Party, using the American-style spelling Labor in its official name. Cambridge identifies this as the Australian Labor Party.

This creates an important writing rule:

Follow the official spelling of a proper name.

Don’t rewrite an organization’s name simply to make it match the spelling style of the rest of your article.

Common Mistakes With Labor and Labour

Using Labour in American English

If your entire article follows American English, labor is normally the appropriate form.

Incorrect for standard US spelling:

The factory needs more skilled labour.

Preferred:

The factory needs more skilled labor.

Using Labor in British English

The reverse applies to British English.

Preferred in British spelling:

The company is facing higher labour costs.

American spelling:

The company is facing higher labor costs.

Neither form is universally “more correct.” The surrounding English variety determines the appropriate spelling.

Mixing Both Forms

One of the most common problems is inconsistency.

For example:

The company reduced its labor costs but hired more skilled labour.

That sentence mixes American and British spelling.

A consistent American version would use labor throughout. A consistent British version would use labour throughout.

Consistency matters because spelling works as a signal. Readers quickly notice when an article jumps between English varieties.

Labor or Labour: Which One Should You Use?

The decision becomes simple once you identify your audience.

Choose Labor When:

• You’re writing in American English.
• Your audience primarily lives in the United States.
• Your publication follows US spelling.
• You’re following an American style guide.
• You’re writing terms such as labor costs, labor force, or manual labor for a US audience.

Choose Labour When:

• You’re writing in British English.
• Your audience primarily uses UK English.
• Your publication follows British spelling.
• You’re writing for a British institution or publication.
• You’re using terms such as labour costs, labour force, or manual labour in British English.

What If Your Audience Is International?

An international audience doesn’t mean you should mix spelling systems randomly.

Instead, choose one variety and use it consistently.

For example, if your website uses American English throughout, write:

• labor
• color
• favor
• behavior
• neighbor

If it follows British English, write:

• labour
• colour
• favour
• behaviour
• neighbour

The consistency creates a smoother reading experience.

Labor vs. Labour Example Sentences

Meaning	American English	British English
Physical work	Manual labor can be demanding.	Manual labour can be demanding.
Workforce	The industry needs skilled labor.	The industry needs skilled labour.
Cost	The estimate includes materials and labor.	The estimate includes materials and labour.
Childbirth	She went into labor last night.	She went into labour last night.
Verb	They labored to finish the project.	They laboured to finish the project.
Worker	The laborer carried the equipment.	The labourer carried the equipment.
Expression	It was a labor of love.	It was a labour of love.

The table reveals the central rule clearly: the meaning stays the same while the spelling changes.

A Simple Way to Remember Labor vs. Labour

Here’s an easy memory trick:

US English drops the U.

So:

• labor = US
• labor = no u
• labour = UK
• labour = includes u

You can apply the same pattern to several familiar words:

color → colour

favor → favour

honor → honour

labor → labour

It isn’t a rule for every spelling difference between American and British English. However, it works well for this particular family of words.

Quick Facts About Labor and Labour

• Labor is the standard American English spelling.
• Labour is the standard British English spelling.
• Both words generally have the same meanings.
• Both can function as nouns and verbs.
• Both can describe work and physical effort.
• Both can refer to workers collectively.
• Both can refer to childbirth.
• Laboring is the American spelling.
• Labouring is the British spelling.
• Labored is the American spelling.
• Laboured is the British spelling.
• Laborer is the American spelling.
• Labourer is the British spelling.
• Laborious remains the standard spelling in both varieties.
• Official names should retain their established spelling.

Merriam-Webster also records labor as a noun, verb, and adjective and traces the English word back through Middle English and Anglo-French to Latin.

Final Verdict: Labor or Labour?

The answer is straightforward:

Use “labor” in American English.

Use “labour” in British English.

The two spellings usually carry the same meanings. They can describe work, effort, workers, or childbirth, and both can function as nouns or verbs.

If you’re writing for a US audience, choose labor and keep that spelling throughout your article. If you’re following British English, choose labour instead.

Think of the extra u as a spelling marker, not a change in meaning. Once you know which English variety you’re using, this particular spelling question becomes much less of a stumbling block.

Read More: Practising or Practicing: Correct Spelling, Meaning and Usage

FAQs

1. Is labor or labour the correct spelling?

Both labor and labour are correct spellings. Labor is standard in American English, while labour is standard in British English and other varieties that follow British spelling conventions.

2. What is the main difference between labor and labour?

The main difference is spelling, not meaning. Labor and labour can both describe work, effort, workers, or the process of giving birth. Your choice depends mainly on the type of English you are using.

3. Should I use labor or labour in American English?

Use labor in American English. For example, American writers normally say labor costs, labor union, and labor laws. This spelling fits a US audience and follows American spelling rules.

4. Should I use labour in British English?

Yes. Labour is the usual spelling in British English. You will see it in phrases such as labour costs, labour union, and labour laws. It matches British spelling conventions.

5. Do labor and labour have different meanings?

No. They generally have the same meaning. The difference comes from regional spelling rather than vocabulary. Both words can refer to work, physical or mental effort, a group of workers, or childbirth.

6. Why does American English use labor instead of labour?

American English often removes the u found in several British spellings. This pattern also appears in color and colour, as well as favor and favour. Therefore, labor follows a broader American spelling pattern.

7. Which spelling should I use in formal writing?

Choose the spelling that matches your intended audience. Use labor for American readers and labour for British readers. Consistency matters because switching between the two forms can make your writing look less polished.

8. Is labor or labour used when talking about childbirth?

Both spellings can describe childbirth. American English uses labor, while British English uses labour. For example, an American publication would normally write that someone went into labor, while a British publication would use labour.

9. Should official names use labor or labour?

Official names are an important exception. If an organization, institution, party, or other proper name has an established spelling, keep its original form. Don’t change labor to labour, or labour to labor, simply to match your preferred variety of English.

10. How can I remember whether to use labor or labour?

A simple way to remember it is US = labor and UK = labour. Think about your reader before choosing the spelling. If you’re writing for an American audience, use labor. If you’re writing for a British audience, use labour.

Conclusion

Labor and labour are two spellings of the same word. Labor is used in American English, while labour is preferred in British English. The meaning remains the same, so the difference is mainly based on regional spelling rules.

This distinction appears in everyday writing, professional documents, academic work, news articles, and online content. American English also uses forms such as color and favor, while British English uses colour and favour.

When choosing between labor and labour, think about your audience. Use labor for readers in the United States and labour for British readers. Keeping your spelling consistent makes your writing clearer and more natural.

Once you understand this regional difference, the choice becomes simple. Both forms are correct in their appropriate varieties of English, so you only need to match your spelling with the audience you’re writing for.