IN REGARDS TO THIS CASE, What is the ADA? How does this law possibly apply to the client's case?

On Friday of last week, I met with Maria Kellen Rosa and I have accepted this client's case for the firm. We will be conducting some research on the case at this point.Maria was born on June 8, 1995 and is a resident of this county.

Maria was recently informed by her employer that she cannot perform her work duties while seated in her wheelchair and will be required to stand for up to an hour at a time to help clients beginning the first day of next month. Maria is employed by ABC Beauty Salon as a receptionist, which is located in this county. Her job requires that she welcome clients, complete the check-in process for incoming clients when they arrive, provide a robe to each client, and provide water, coffee, or tea to each client as they await their appointment.

During the initial interview, it was revealed that Maria is confident she can complete each of these tasks pursuant to the applicable job description while using a wheelchair. Maria is requesting a medical accommodation based on ADA law for this issue, but she wants our help in researching and applying the law to the issue.

Maria did not require a wheelchair when she was first hired in 2014. However, related to her diagnosis of Larsen Syndrome, her knees have become too painful to stand for more than a few minutes at a time. The intake paralegal has collected and validated Maria's diagnosis. Maria's treating physician included a formal letter to the law firm verfiying our client's medical need for a wheelchair.

Maria's manager refuses to accommodate her need for a wheelchair and has accused her of "being lazy." Maria is afraid she will lose her job as a result and is seeking our firm's representation.

What is the ADA? How does this law possibly apply to the client's case?