a reason or any reasons

[Winwin2011]

Mak, you have been late for work every day. Is there a reason?

I wonder if it is natural to use "Are there any reasons" in the above context? If Yes, is there a difference?

Thanks.

 

[emsr2d2]

Mak, you have been late for work every day. Is there a reason?

I wonder if it is natural to use "Are there any reasons" in the above context? If Yes, is there a difference?

Thanks.

The first suggests they only expect to hear one reason. The second suggests one or more reasons. However, there is no meaningful difference between the questions. You are more likely to hear the first.