Reasonable Accommodation Q&A

What employment laws protect disabled individuals and which employers are covered?
If a disabled person applies for a job, do I have to choose him or her over other candidates?
What kinds of things might be required as reasonable accommodations, and how do I figure out which ones to use in a particular situation?
Am I required to let an employee telecommute if he or she wants to?
We have a patient who wants to bring her dog with her to her appointments. One of our employees is deathly afraid of dogs and another employee is allergic to dogs. Can we refuse to have a dog on our premises?
What is the definition of "reasonable accommodation"?
One of my employees often is absent from work and says it is due to migraine headaches. I’m not a doctor, so how am I supposed to know what to do to accommodate her under the disability discrimination laws?