work for + employer
Who employs someone?
Use work for with companies, organisations, or people.
My brother works for a bank.
She works for the government.
Work with, in, for, on, or as?
Different prepositions after work express different meanings such as employer, field, project, role, or collaboration.
Quick answer
Choose the preposition by meaning
Use work for for employers, work in for industries or places, work on for tasks and projects, work with for people or tools, and work as for jobs or roles.
She works for a software company.
He works in finance.
They work on climate research.
I work as a designer.
He works in finance.
They work on climate research.
I work as a designer.
Choose the pattern by meaning
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
work in + field/place
Which industry or location?
Use work in for sectors, departments, or workplaces.
He works in marketing.
They work in a small office downtown.
work on + project/task
What task is being done?
Use work on for projects, problems, or improvements.
We are working on a new app.
She worked on her presentation all night.
work with + person/tool
Who or what do you cooperate with?
Use work with for colleagues, clients, materials, or equipment.
I work with international clients.
The lab works with advanced equipment.
work as + job
What is someone's role?
Use work as before a profession or function.
She works as a translator.
He worked as a chef in Paris.
See the difference in context
The same subject can take different constructions because each sentence answers a different question.
Construction
Example
Meaning
work for
She works for a charity.
Shows the employer.
work in
He works in education.
Shows the field or location.
work on
They are working on a report.
Shows the task or project.
work with
I work with children.
Shows collaboration or contact.
work as
She works as an engineer.
Shows a role or profession.
Common mistakes
Some combinations appear in real text but do not mean what learners often assume.
Using as with a company
Use for with employers.
✕ He works as Google. ✓ He works for Google.Using in before a job title
Use as before professions.
✕ She works in a nurse. ✓ She works as a nurse.Using on for people
Use with when cooperating with people.
✕ I work on a great team. ✓ I work with a great team.Quick practice
Choose the expression that matches the intended meaning.
1. She works ___ a large hospital.
2. They are working ___ a difficult problem.
3. He works ___ a journalist.
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Frequently asked questions
What is the difference between work in and work at?
Work in usually refers to a field or indoor place, while work at often refers to a specific workplace or task.
Can I say work with a company?
Yes, if you cooperate with the company but are not necessarily employed by it.
Is work on only for physical tasks?
No. It is also used for ideas, relationships, skills, and research.
Related preposition guides
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