"in a bank" or "at a bank"

[edmondjanet]

I am on leave. So if somebody asks me "where are you working" Can I say,
I am working in a bank. or
I am working at a bank. Which one is correct?
Thank you.

 

[Allen165]

I am on leave. So if somebody asks me "where are you working" Can I say,
I am working in a bank. or
I am working at a bank. Which one is correct?
Thank you.

NOT A TEACHER.

"I work at/for a bank" would be my preference, but "in" might also be correct.

 

[AlexAD]

Hello, there.
I wonder if the indefinite article might be ommited?
Thanks.

 

[5jj]

I wonder if the indefinite article might be ommited?

No.