Employee (Mr. X) has worked for your company for four years, you are his supervisor during this time. You have heard from other employees that Mr. X claims he has some type of mental problems which tend to come and go, but he has never formally mentioned it to you or management. A few days ago, while receiving constructive criticism from his supervisor, Mr. X became very upset, threw a chair at a wall within two feet of hitting you, his supervisor and he stated to you, "You are always on my back, if you do not let up you will be sorry because I will make you pay." Then Mr. X stormed off the job. The next morning Mr. X and his lawyer have approached you with a written letter that demanded a reasonable accommodation for his mental condition, which they claim to be qualified under the ADA.