Thank you very much for your reply.
While what you are describing is extremely unfair and unquestionably bad management, it is not illegal unless you can prove that it is occurring specifically because of how old you are or due to some or other legally protected trait, such as your race or religion. In all other circumstances, employers are free to manage their business in whatever manner they choose. They have no obligation to be fair or reasonable, and can take adverse action against you even if you have a spotless performance record. This is because employment is "at will" absent an agreement to the contrary. At will employment can be terminated at any time for any reason other than a legally protected trait (i.e. age, race, religion, etc.) or a legally protected activity (i.e. filing a wage claim), regardless of whether the reason is fair or even true. Since employment can be terminated "at will" the terms of employment can be modified with equal freedom.
You indicate that your age may be your employer's motive. However, it seems that the real reason you suspect is your pay grade. While higher pay often correlates to being older, it is not illegal to take adverse action against an employee because they are paid more. In fact, this sort of economic motive is extremely common and legal even though it tends to affect older employees more than younger ones who are lower on the pay scale. Businesses have a right to try to maximize their profits, which necessarily may entail reducing payroll.
If you truly believe that your age and not your pay is the reason why this is happening and you have at least some evidence to back this up (i.e. negative comments are made about how old you are, there is a pattern of unfavorable treatment toward older employees, or the person taking your clinic home is substantially younger and less qualified), your recourse would be to file a complaint with the EEOC. This is the federal agency that enforces our age discrimination laws. The EEOC will conduct an investigate and attempt to mediate a resolution with your employer. That not forthcoming, they will issue you what's called a "right to sue" letter which will then authorize you to file a lawsuit in civil court. This would be your remedy under these circumstances.
But again, if you can't prove that age is the reason this is happening to you, none of the other reasons you suspect are illegal, and you would not typically have any recourse through the court system. Your only recourse in this circumstance would be to deal with the matter on an internal level by complaining to your higher ups and appealing to their sense of fairness. And if that doesn't work, you may wish to consider leaving this job for an employer who treats you better.
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