How to answer the question 'What do you do?'

source: Learn English with Let's Talk    2016年3月25日
Blog : http://www.learnex.in/free-english-le...
When you are asked such a question, people want to know your work profile, the kind of job you are involved in. You can start your answer by saying: I work at, I work in, I work for or I work with.
When you use 'I work at or I work for', you are going to tell them the company's name you are working for. Example: I work at Let's Talk Pvt. Ltd (OR) Example: I work for Citibank.

I work in or I work on can be used in many ways
I work in is used to talk about the exact place you are working for.
Example: I work in an office.
Example: I work in a school.
Example: I work in a factory.
Example: I work in a boutique.
Example: I work on a farm (if you are a farmer)
Example: I work on a construction site.

I work in can also be used to name the city or country you work in.
Example: I work in Paris.
Example: I work in America.
Example: I work in the UK

I work in can also be used when you are talking about a specific department of a company.
Example: I work in the HR department.
Example: I work in the Marketing department.

I work in can be used when you are talking about a specific area of expertise.
Example: I work in consulting. (as your area of expertise is consulting)
Example: I work in law.

I work for is used when you want to say you are directly working for an important person:
Example: I work for Tom Cruise.
Example: I work Steven Spielberg

I work with is used in two different ways:
When you work with objects of work or the things that you work with.
Example: I work with computers.
Example: I work with clothes.

I work with is also used when you talk about the specific kind of people you work with.
Example: I work with students of special needs.
Example: I work with engineers or architects.

For those who do not have a job could say:
Example: I am unemployed.
Example: I am between jobs.

There are some people who work for themselves. So your answer could be:
Example: I am self employed
Example: I own a small business