I recently started work from a home office for a small multistate company.  All the employees work from home and it is a challenge for me to figure out how put procedures in place to protect the company without being overly cumbersome.

 How do virtual companies manage the legal posting notices?

 Also, signatures on documents.  Since I can't walk, for example, contractor agreements next door to the President's office for a signature, should I sign on his behalf?  Any problem with doing this?  Having never been an administraive assistant, I'm not familiar with the protocol, but it would certainly speed the process up.

I wouldn't sign anything without written authorization to do so.  Once you are duly authorized in writing, sign away.  Alternatively, make good use of scanner/email or fax machine.

I think most people ignore the legal posting notices but, since they're all available free  of charge (you just have to know which ones you need), you can actually email them to employees.