3. What are your job responsibilities?

What do you do?

What do you do for a living?

What is your job?

What line of work are you in?

All of these questions mean the same thing — what is your job?
The first question is probably the most universal question that people ask when talking about work and jobs.
Let’s look at how to answer these questions and provide more information about your job.

I’m a …

So what to say?
Well, you just say the name of your job.

• 
  I’m a teacher
  
• 
  I’m an engineer
  
• 
  I’m a website designer
  
• 
  I’m a bus driver
  
• 
  I’m a project manager
  
• 
  I’m a farmer
  

Whatever your job is, you just say the name of it as in the examples above.

I work for a …

Another way you could answer the question — what do you do? — is to say the kind of place where you work.
This may not tell the other person what your job is, but they can get a clearer picture of what kind of work you are in.

• 
  I work for a community college
  
• 
  I work for an online English company
  
• 
  I work for a training company
  
• 
  I work for the local council
  
• 
  I work for myself
  

So if I were to say the first answer — I work for a community college — the other person might think I am a teacher, or maybe an assistant, or doing some administration work in the college.
But they would understand that I am working in a place of education.
If I said I work for the local council, they would realise that I am a government employee — but I could have any kind of job.
And finally, if I said I work for myself, then they would know I am self-employed and don’t work in a company or for anyone else. I am independent.