Write a performance improvement plan based on the case below;

John is 30 day employee of your company. He had 4 years of experience processing warranty claims for hi-tech electronic photo albums before coming to work for your company. Lately John's performance at your company has suffered, and the decline in performance had begun affecting other employees. The staff complained you the he has a poor tone of voice when speaking to others, he is constantly asking same questions again and again, he had been irritable with co-workers, complaining and sharing private information during breaks and several employees have asked to have workspaces moved after their interaction with John.

You are John's supervisor and you need to prepare a performance improvement plan for him.