physical disability

Am I Being Discriminated Against When My Employer Refuses to Make Accomodations for My Wheelchair?

I am wheelchair bound and I have had great difficulty getting to and from work because there is no ramp at the entrance to the building. I have mentioned this over and over to my superiors instead of a ramp they have bought me lavish lunches and tickets to sporting events. I don't need these things, I need a ramp to get into work safely. Is it legal to repeatedly deny my request?