When someone asks you 'What do you do?', they're asking 'What's your job?'. You, for example, might answer 'I work for an insurance company.'
Someone may then ask for more information using one of these questions:
- What do you do exactly?
- What does that entail?
- What are you responsible for?
You can give more information using the following expressions:
- Basically, I sell insurance policies.
- I am responsible for customer accounts.
- I take care of corporate accounts.
- I usually answer customers' questions.
- I mainly handle claims.
- I'm an underwriter.
So my question to you is - what exactly do you do at work?