A W-9 document certifies an individual's or entity's tax identification number and is used to gather information about that individual or entity.
Waiver
In a Medicare Secondary Payer Recovery situation, a waiver is the forgiveness of the debtor's obligation to satisfy Medicare's demand amount, either in whole or in part, if certain conditions are met.
Workers compensation
The employer's insurance company is required to provide medical care or compensation for an employee who gets sick or injured on the job.