Be sure and get her office to give you some things. For example a copy of her time card if she is hourly, a name badge, her name tag off of her uniform if she wears one, etc..If you can't put these items directly in the book, take and get them color photo copied on to acid free sheets. I would also color photo copy on to acid free paper the letters from her co workers. Ask if she has ever received an award from work and try and get a copy of that, or a good job review, etc. I would also take a picture of her car parked in her favorite parking spot at work and the front of the building, and if possible exactly where (at her desk or her part of an assembly line, etc. preferable while she is doing her job) she worked whether it be in a factory, or an office. Also ask if she was ever in charge of the Christmas party, charity drive, etc. If they make an item there get a picture of it going down the line, etc... Penny

Depending on how much time you have and if someone your Mom works with would do this for you, this worked well for several retirements were I work ...... including my own!
Take pictures of co-workers perhaps performing their jobs or maybe some silly thing they are noted for. Mount them in the scrapbook and then pass the book around and let the people write directly by their picture. A co-worker may have to help to judge how much space to leave for writting some times 1-2 pictures per page works well because some people write alot! Which is a nice touch. Pictures of her work space, parking lot, building, favorite lunch place are fun. As far as special documents etc. like Penny said I would have those copied on acid free paper. Also, if your Mom has any pictures of her own at home you can add these to the album for her. Good luck....she will love it!!