User limitations

Hi. I am running a Non-profit and am in need of a few people to build some pages on my site, which are basically a templete but need the text inputted. My question is this…. is there a user limitation that would allow them to crete and edit a page but not allow them to delete the page. My fear, as Im sure you can understand would be a disruntled person who decides one day to delete all my pages and im out of business. Any suggestions/ Info would be greatly appreciated.

Thank You
Joe