In today's tough job market, it can be a challenge to beat out your competition and land a job. If you're an adult, with years of job experience under your belt, you can go back to school with ready-made credits in work experience. In both scenarios, work experience letters can be invaluable aids in getting you where you want to go. Let's say you're a fairly young person, with only a couple of jobs to list on your resume. You may be extremely talented, but that can be difficult to convey on a resume. Some employers will review each resume for just a minute, looking for someone with plenty of related experience.