What happens to me if I refuse to accept a registered letter/package?

I am receiving registered mail, signature required from my past employer. Am I legally obligated to accept it? The problem is that I am not home when the mail comes and keep getting the notifications. It is also difficult to drive across town to pick it up during the post offices open hours and am often out of town.
If you never sign for it, the USPS will return it to the sender.

It might be something important, like benefit or pension information that the law requires your old employer to send registered. Please consider that before refusing it.

You might be able to leave the letter carrier a not saying that you would be home on Saturday or see if it could be forwarded to your present work address or that of a trusted friend or family member.
You don't sign for it, you don't get it....thats all
if you don't want it don't sign for it. a lot of smaller rural post offices will let you look at the outside of the envelope before signing for it -- hopefully theirs a return address or something on it for you to see who it's from before you actually sign for it.

usually registered letters are always some sort of bad news that you don't want to hear anyway. or at least that's been my experience.
NO, there is not risk to you other than not getting your mail.

However if the mail is in regard to some legal action, then you may expect that they will use some other way to serve the letter on you.

If your employer is suing you, then they would have to serve you. Service of process is different than using certified mail. Certified mail is used when you want to be able to show at a future date that you have actually tried to send something to another person. If you left some personal items at your prior employer, for example, then they would send it to you certified so that they would be able to keep the green card after you accepted it. I would suggest you call the employer and ask what the letters are if you are still speaking to them to find out why they are attempting to serve you. They may be notifying you of a change in your benefits or they may be giving you income tax information, etc.

I cannot think of any reprecussions you would have by refusing to accept the mail unless you wanted to file a complaint at a later date. If you attempted to say that they did not give you something, etc. then they would be able to state that they actually did try and return something to you but you would not accept it.
i am a fall down drunk. i will mumble and stumble in your vicinity. when i get within arms length of you i will coherently hand you the documents and state 'you've been served' you are being sued. and you cannot avoid it