My dad decided to retire early at 58. He did a bit of consulting and helped out some younger leaders, but mostly, he ended up with too much free time and not much to do. Obviously, he ended up watching a lot of TV, which really wore him down mentally and physically, and he didn't get out much to socialize either. Seeing this, I attempted to assist him in finding a full-time job, and here's what I learned from the experience: Ageism is a genuine issue, clearly present in hiring, promotions, layoffs, and other areas. However, one thing you can manage is how you craft your resume and present yourself – that's something within your power to control.I wrote this article to assist those looking to re-enter the workforce. After interviewing over 15 recruiters I learned that recruiters often detect signs of a candidate's age through subtle hints: an old-fashioned email address, an outdated resume style or wording, and other small details. Here are a few tips not to be overlooked.