As part of the hiring process, many employers check with prior employers to verify that applicants are telling the truth on their application. If you're wondering what you should if your past employer won't confirm that you've worked for them, there are a few things you can do to prove your employment background. In some situations, simply explaining why your employer won't verify previous employment may be enough. However, you must do so diplomatically, even if your employer is at fault because of a contract dispute or another situation. In addition to word of mouth, you can also present the hiring manager or potential employer with tax information from the prior year or period of employment. For example, you could submit your W-2 or 1099 information from that employer showing that you were in fact, an employee. If all else fails, leave that employment information off of your resume and application. Instead, focus on other skills and abilities you possess that make you an attractive candidate in addition to other work experiences that serve as a testament to your qualifications.