Please allow up to five business days for processing. A copy of the requested letter will be kept in your personnel file.Need to offer proof of employment or income? This template makes it simple to create an employment or income verification letter for you or your employees. The Work Number database is a simple, secure and discreet way to help get proof of your employment and income information to companies when needed. In order to use my previous experience for salary purposes, it is necessary to verify my dates of employment within 90 work days of my hire date. Need to provide proof of employment status? Use this sample employment verification letter to create your own. Email Retirement Benefits. Phone: (561) 227-6324. Payroll.