Employment verification letters; Lost wages forms. Need to provide proof of employment status?Use this sample employment verification letter to create your own. To provide: An employer-completed verification of employment, wages, mandatory withholdings and deductions. Discover 7 different employment verification letter templates with different details for proof of employment or future job opportunities. Employment verifications are provided through THE WORK NUMBER at (800) 367-2884, Dallas County Employer Code: 15311. Complete the request for a verification letter and allow up to 4 days for processing. To create an applicant account, go to Career Pages website and click on the Sign In tab, and then Don't have an account? Thank you for applying to Unity Search! Your application has been received and is being processed, we will get back to you as soon as we can.