Display a message if category is empty

Hello,

Great tool, really, I use List category posts a lot and I think I start to use it well.
But I still have a few questions and here’s one.
Here’s my code :

<table>
  <tr>
    <td>
    [catlist name=emploi numberposts=2 thumbnail=yes thumbnail_size=200,250 no_post_titles=yes excludeposts=this]
    </td>
    <td>
    [catlist name=emploi numberposts=2 thumbnail=yes thumbnail_size=200,250 no_post_titles=yes excludeposts=this offset=2]
    </td>
    <td>
    [catlist name=emploi numberposts=2 thumbnail=yes thumbnail_size=200,250 no_post_titles=yes excludeposts=this offset=4]
    </td>
  </tr>
</table>

The little thing I would like to do is to display a message if the category “emploi” doesn’t include any post.
How to proceed ?

Thanks a lot for your help.

https://wordpress.org/plugins/list-category-posts/