Perceived age is not a protected class if your actual age is under forty years old. If you could establish that there is unfair treatment because of gender or or marital status, you might have a claim. Good luck to you.
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Your post is troubling in your reference to your assertion that, compared to the person selected, you are "more qualified, skilled and experienced." You should know that the law does not require the employer to pick the most qualified, skilled or experienced candidate. (Exception: public employment where the public entity employer has a stated policy of picking the "best qualified" and has defined the standards and criteria for "best qualified.") The law also does not define the criteria for most qualified. Skill and experience are not necessarily the criteria for that determination.
It is a widely misunderstood fact but employers can lawfully select the worst qualified, a brother-in-law who is functionally illiterate, or make the choice by random. The law only requires that prohibited characteristics such as race, religion, etc not be the basis for the selection.
It is lawful for the employer to require one employee to train another, notwithstanding inequities in their compensation, rank, experience, skill, etc.
You would have a heck of a burden to prove that your employer was making employment decisions on the basis of belief that you are ten - 30 years older than you are. But the issue won't be reached because you are not protected by the laws re age discrimination.
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