Sadly, unless you have tenure that is part of your employment contract and signed by your employer an employee can be replaced if they cannot do the job they were hired to do. It is vital to be upfront about your condition with your employer for them to make a determination about the position you were hired to do. Unless your condition is a result of your job an employer can replace you anytime he feels that he needs to for his advantage and that would be the good ole dollar. If your condition is a result of your job that is another matter all togather. It is times like these that disability or unemployment insurance is a good thing to have. If you are fired as a result of getting sick you may still be able to draw unemployment or have other benifits if the illness isn't due to any negligence on your part in some states even though you were fired. It will be determined in a hearing after you file for unemployment. A lawyer might be of help in your state in this area. Also this is what the department of Human services is for in your state. To help those who cannot help themselves. You have certainly paid your share of taxes in your life to be able to draw these benifits from welfare so dont feel quilty it isnt charity, you paid for it dearly many times over so go fill out the papers and don't let yourself or those who depend on you suffer!!