An offer of employment from a job. Basically the tenant has an offer this is how much they will make if they accept it.Yes. that is the prime call a potential landlord makes. You fill out the rental application, and that includes your income. Mention your name, the type of job you do, and why you're interested in the apartment. Is using a job offer letter for proof of income to rent an apartment illegal if i have no i Intention of taking the job? Learn how to write a proof of income letter with our stepbystep guide and use our fillintheblanks template as an example. We outline the essential state-specific Landlord-Tenant Laws for Pennsylvania. Learn about tenant rights, security deposits, essential notices, and more. The Guide explains what you should know when applying to rent, living in a rented property, and dealing with the end of a lease.