Legal Question in Landlord & Tenant Law in Illinois

1. "can he do that" -- normally a landlord is entitled to credit information which includes where you work. If your landlord wants to verify employment, that's about all the employer is obligated to do. It's up to you but you may want to ask your new employer what kind of information they give out, and ask your landlord what kind of information he expects to learn. A letter may suffice.

2. Technically posting notices like this is not the way it's supposed to be done. If you talk to your landlord about it, you will be acknowledging receipt. I guess the issue is whether he plans on following through on an eviction if he doesn't get the answers he wants from your new employer. He is covering his bases...

3. If you did not resign a lease you MAY BE on a month-to-month at this point. Again, does the landlord intend to give you a new lease for the balance of the year (to March '12)? or is the landlord keeping his options open by considering this month-to-month.

If you need someone more knowledgeable to help, like an attorney, it may be a good idea now. How well things go may depend on how long you were living there before your money problems started, and how prompt you were in paying rent before then. It may also depend on how many other people there are out there eagerly waiting for a place to live to open up in his building.... A lawyer can make a "friendly call" to find out what the landlord's intentions are. Otherwise at the end of 5 days he can start eviction proceedings, and if you object to the way notice was served, a court may or may not agree but eventually the landlord will serve you properly and in the mean time will be angry he lost another month's rent (perhaps).