The term 'THEIR JOB IS TAXING' refers to the job of ASSESSORS, which is a nine-letter word. ASSESSORS are responsible for evaluating property values and determining the amount of taxes that should be paid on them. They also review tax returns and investigate any discrepancies. ASSESSORS must have a thorough understanding of local, state, and federal tax laws in order to accurately assess the value of property and determine the appropriate taxes.