Prepositional Phrases with WORK in English

Hello English learners! If you want to sound more natural and confident in English, learning prepositional phrases with work is extremely useful. Many learners know the verb work, but they are not always sure which preposition to use after it. Should you say work in a hospital, work at a hospital, or work for a hospital? In this lesson, you will learn the most common prepositional phrases with work, with clear explanations, practical examples, and useful notes to help you use them correctly in speaking and writing.

Should we say work in a hospital or work at a hospital?

Do we work for a company or work with a company?

What is the difference between work on and work as?

In today’s lesson, we are going to look at the most common prepositional phrases with work, along with clear explanations and plenty of example sentences. Let’s get to work.

Work as

We use work as to say what job or role a person has.

Examples:

• Tim has been working as a flight attendant for more than ten years.
• After graduating from university, Brian started working as an assistant manager for a multinational company.
• Before she became famous, Gwyneth Paltrow used to work as a shop assistant.
• My cousin works as a graphic designer for a publishing company.

Useful note:

Use work as + job title.

✅ work as a teacher

✅ work as an engineer

❌ work as in a teacher

Work by

We use work by to explain how something functions or operates.

Examples:

• This heater works by electricity.
• Antibiotics work by killing bacteria or stopping them from multiplying.
• The vaccine works by triggering the body’s immune response.
• Some machines work by using air pressure.

Useful note: This structure is usually used when talking about machines, systems, medicines, or processes, not people.

A slightly more natural version of the first example would also be:

• This heater works on electricity.

Both can appear, but work by is more common when explaining the mechanism, while work on often refers to the source of power.

Work with

We use work with to talk about the people, things, tools, or materials involved in our work.

Examples:

• I was so lucky to work with you. Enjoy your retirement, Tom!
• The government is working with the police to combat organised crime.
• People who work with dangerous substances need protective equipment.
• She loves working with children because every day is different.
• As a photographer, he works with both natural and artificial light.

Work with can mean:

• collaborate with someone
• handle or use something
• deal with a particular type of person or material

Work for

We use work for to say who employs you or which organisation you serve.

Examples:

• Molly has been working for that company since she left university.
• When he finished school, Gary first worked for his relatives.
• Julian sometimes does voluntary work for the Red Cross.
• John has always wanted to work for an art gallery.
• She works for an international charity.

Use work for + company / employer / organisation.

✅ work for Google

✅ work for the government

✅ work for a law firm

Work in

We use work in to talk about the area, field, department, town, city, or country where someone works.

Examples:

• She works in a café at weekends to earn some extra money.
• Since her divorce, Jill has been working in a little town in the south of England.
• He is a web designer working in Los Angeles.
• Don is a blogger currently living and working in Brazil.
• My sister works in marketing.

We often use work in for:

• a city or country
• a building or general workplace
• a field or industry

For example:

• work in London
• work in an office
• work in education

Work at

We use work at to refer to a specific workplace, company, institution, or address.

Examples:

• Mildred is a nurse working at a local hospital.
• Zoe works at a museum as a conservator.
• Brian’s sister works at a university as a teaching assistant.
• He works at a small law firm in the city centre.
• I prefer working at home when I need peace and quiet.

Sometimes work in and work at are both possible, but the meaning changes slightly:

• work in a hospital = focus on the type of place or environment
• work at St Mary’s Hospital = focus on the specific institution

That little difference matters.

Other Useful Expressions with WORK

Work from home

We use work from home when someone does their job at home instead of going to the office.

Examples:

• Sandra works from home once a week.
• Since the pandemic, many people have started working from home full-time.
• I enjoy working from home, but I miss chatting with colleagues.

Work from … to / till …

We use this structure to talk about working hours.

Examples:

• They usually work from 7 to 2 on Fridays.
• My father works from nine till five.
• We had to work from early morning until late at night.

In modern English, from … to … is the most neutral structure, while from … till … is also common in everyday speech.

Work on

We use work on to talk about a task, project, problem, or piece of work that needs attention.

Examples:

• Don’t interrupt me. I’m working on a very important project.
• She is currently working on a new novel.
• The engineers are working on a solution to the problem.
• We need to work on our pronunciation.

This is one of the most common phrases with work.

✅ work on a report

✅ work on a plan

✅ work on improving your English

Work during

We use work during to say when the work happens.

Examples:

• Sara worked during her summer holiday at an animal shelter.
• Many students work part-time during the academic year.
• He prefers not to answer emails during lunch breaks.

Work on a particular day

When talking about opening days or schedules, be careful.

We do not usually say:

❌ The shop won’t work on Sunday.

A more natural version would be:

✅ The shop won’t be open on Sunday.

✅ The shop doesn’t open on Sundays.

✅ The shop won’t operate on Sunday, 7 September.

Examples:

• The shop won’t be open on Sunday.
• Our office doesn’t operate on public holidays.
• The library is closed and won’t open again until Monday.

Quick Summary

Here is a simple guide:

• work as = have a particular job
• work by = function in a certain way
• work with = collaborate with or use
• work for = be employed by
• work in = be employed in a place, area, or field
• work at = be employed at a specific institution or workplace
• work from home = do your job at home
• work on = focus on a task or project

Final Tip

When learning phrases with work, do not memorise the verb alone. Learn the whole chunk:

• work as a teacher
• work for a company
• work with children
• work on a project
• work from home

That is how you build natural, confident English — one useful phrase at a time.