text - Do graphic designers format and proof read documents?

Do graphic designers format and proof read documents?

We are editors of large reports, mostly from government. The drafts we get are often a mess of formats, with heading structures not clear and the text in multiple styles, in boxes and embedded in images. We pity the poor graphic artist who would have to work out the structure of the document and fix all the text up, if the author doesn't use an editor first. So, a few questions ...

1. 
   

   Do graphic designers do much text clean-up like this?

   
   


2. 
   

   Is not understanding the structure of a document because of poor use of heading styles a problem?

   
   


3. 
   

   Would graphic designers much prefer to get the text cleaned up and and well-styled, or isn't it really a problem?