In Behalf or On Behalf? Which is Correct?

English prepositions can be tricky, and one of the common points of confusion is the difference between “in behalf” and “on behalf”. While both phrases are used in formal writing and speech, they carry distinct meanings and are used in different contexts. Understanding when to use “in behalf” and “on behalf” will help you communicate more effectively and avoid making common mistakes.

In this article, we’ll explore the difference between “in behalf” and “on behalf”, explain their meanings, provide examples of how to use each phrase, and offer practice questions with answers to reinforce your understanding.


The Difference Between In Behalf and On Behalf

Although these two phrases seem similar, they serve different purposes based on their meanings. Let’s break down their definitions and proper usage.

1. In Behalf

The phrase “in behalf” is less commonly used in modern English, but it carries a specific meaning. It refers to doing something for the benefit of someone or in support of a cause or person. When you act in behalf of someone, you are doing something to help them or to support their cause or interests.

Definition of In Behalf:

  • In behalf: To act in support of or for the benefit of someone or something.
  • Used in a sentence: In behalf is used when you are helping or supporting a person or a cause.

Example Sentences:

  1. The charity raised funds in behalf of the victims of the natural disaster.
  2. He spoke passionately in behalf of animal rights during the conference.
  3. We are organizing this event in behalf of the local community center to raise awareness.
  4. The volunteers worked tirelessly in behalf of the homeless shelter.

In these examples, “in behalf” is used to indicate acting or speaking to support or benefit a person, group, or cause.


2. On Behalf

The phrase “on behalf” is much more commonly used in both formal and informal contexts. It means to act as a representative of someone or instead of someone. When you speak or act on behalf of someone, you are doing it as their representative or with their authority.

Definition of On Behalf:

  • On behalf: To act or speak as a representative of someone or instead of them.
  • Used in a sentence: On behalf is used when you are acting or speaking for someone else, with their permission or authority.

Example Sentences:

  1. The lawyer spoke on behalf of her client during the court proceedings.
  2. I am writing this letter on behalf of the entire team to express our gratitude.
  3. On behalf of the board, I would like to thank you for your generous donation.
  4. She accepted the award on behalf of her late father.

In these examples, “on behalf” is used to indicate that someone is acting or speaking as a representative of another person or group.


Why the Confusion?

The confusion between “in behalf” and “on behalf” arises because both phrases involve acting for the benefit of someone else, but they are used in different contexts.

  • “In behalf” is used when you are doing something for someone’s benefit or to support a cause.
  • “On behalf” is used when you are acting as someone’s representative or with their authority.

Over time, “on behalf” has become much more common, and many people mistakenly use it in place of “in behalf”, even when the meaning is about supporting someone or something. While “on behalf” is widely accepted in most contexts, knowing the difference can help you be more precise in your language.


How to Use In Behalf and On Behalf in Sentences

Let’s explore how to use “in behalf” and “on behalf” correctly in different situations to ensure you can use each phrase appropriately.

1. Using In Behalf to Show Support

Use “in behalf” when you are doing something to support or benefit a person, group, or cause. This phrase is useful when discussing charitable acts, advocacy, or any situation where you are helping someone else.

Example:

  • The concert was held in behalf of those affected by the earthquake.

In this sentence, “in behalf” is used correctly to indicate that the concert was organized to support or benefit the victims of the earthquake.

Example:

  • She donated a large sum of money in behalf of the children’s hospital.

Here, “in behalf” is used to show that the donation was made to support the children’s hospital.

2. Using On Behalf to Represent Someone

Use “on behalf” when you are acting as a representative of someone else. This phrase is often used in formal situations, such as business, legal, or official contexts, where someone is speaking or acting for another person or group.

Example:

  • The assistant manager signed the contract on behalf of the CEO.

In this sentence, “on behalf” is used correctly to indicate that the assistant manager signed the contract as a representative of the CEO.

Example:

  • On behalf of the graduating class, I would like to thank our teachers for their support.

Here, “on behalf” is used to show that the speaker is acting as a representative of the entire graduating class.


Common Mistakes and How to Avoid Them

1. Using On Behalf When You Mean In Behalf

One common mistake is using “on behalf” when you really mean “in behalf”. Remember, “on behalf” refers to representing someone, while “in behalf” means acting in support or for the benefit of someone.

Incorrect:

  • The charity raised money on behalf of the victims. (In this case, it’s about supporting the victims, not representing them.)

Correct:

  • The charity raised money in behalf of the victims.

2. Using In Behalf When You Mean On Behalf

Another mistake is using “in behalf” when you mean “on behalf”. If you are acting as a representative, always use “on behalf”.

Incorrect:

  • I am writing this letter in behalf of my manager. (Here, you are representing your manager, so “on behalf” is correct.)

Correct:

  • I am writing this letter on behalf of my manager.

3. Overusing On Behalf

Because “on behalf” is more common, people tend to overuse it, even in situations where “in behalf” is more appropriate. Being mindful of the context can help avoid this error.


How to Remember the Correct Usage

Here are a few tips to help you remember when to use “in behalf” and “on behalf”:

1. Think of In Behalf as Support

When you see “in behalf”, think of it as supporting or helping someone or a cause. It’s about contributing to a cause, not speaking for someone.

  • The fundraiser was held in behalf of the local animal shelter. (Supporting the shelter.)

2. Think of On Behalf as Representation

When you see “on behalf”, think of it as representing someone. It’s commonly used when you are acting or speaking for another person or group.

  • I am accepting this award on behalf of my team. (Representing the team.)

3. Avoid Overusing On Behalf

While “on behalf” is more common, remember that “in behalf” still has its place. If the context is about supporting or benefiting someone, “in behalf” is the better choice.


Practice Questions: In Behalf or On Behalf?

Let’s test your understanding with the following practice questions. Choose the correct phrase to complete each sentence.

Question 1:

Which phrase is correct in the following sentence?

  • The lawyer spoke _ her client during the trial.

a) in behalf of
b) on behalf of

Answer:
b) on behalf of

Explanation: The lawyer is representing the client, so on behalf of is the correct phrase.


Question 2:

Fill in the blank with the correct phrase:

  • The charity event was organized _ the local children’s hospital.

Answer:
The charity event was organized in behalf of the local children’s hospital.

Explanation: The event was organized to support the hospital, so in behalf of is the correct phrase.


Question 3:

True or False:
In behalf and on behalf can be used interchangeably.

Answer:
False

Explanation: In behalf and on behalf have different meanings. In behalf is used for support, while on behalf is used for representation.


Question 4:

Which sentence is correct for representing a group?

a) I am writing this letter in behalf of the team.
b) I am writing this letter on behalf of the team.

Answer:
*b) I am writing this letter on behalf of the team.

Explanation: On behalf is correct because the writer is representing the team.


Question 5:

Fill in the blank:

  • The volunteers are working hard _ the homeless shelter.

Answer:
The volunteers are working hard in behalf of the homeless shelter.

Explanation: The volunteers are working to support the shelter, so in behalf of is the correct choice.


Conclusion

In conclusion, while “in behalf” and “on behalf” are both correct phrases, they have different meanings and are used in distinct contexts. “In behalf” is used when you are acting to support or benefit someone or something, while “on behalf” is used when you are acting as a representative or with the authority of someone else.

By understanding these differences and practicing the correct usage of each phrase, you can avoid common mistakes and communicate more clearly. Whether you are supporting a cause or representing someone in a formal setting, knowing when to use “in behalf” or “on behalf” will help you use these expressions accurately and appropriately.

With a little practice, you’ll confidently use “in behalf” and “on behalf” in the right contexts, making your writing and speech more precise and effective.