Register your concept with WGA (Writers Guild of America) and sign up for IMDbpro, which is a subscription website designed to help film professionals all over the world to find information about each other. Try to find the writers that previously worked on the shows that are similar to your project.
Draft a writer's work-for-hire agreement to avoid story theft or use of your idea. Find a good copyright lawyer, who knows the Copyright Act of 1976 to help you out. In the work-for-hire agreement, you are hiring an independent contractor (a writer) to create your show and you will be the owner of the copyright in that work.
Make sure you have one of the nine categories to qualify your agreement as a work-for-hire agreement. In case of reality TV, a writer's work must be either a contribution to a collective work or a part of a motion picture of other audiovisual work. Study ongoing reality TV litigations to avoid the same problems and look into insuring your project.