The "production staff" were people hired only for taping days at the low, low rate (IIRC) of $25 per day plus a catered lunch. They were not on the show's payroll as salaried employees of the show. Writers ("editorial staff"), researchers, contestant coordinators, producers, directors, EPs, "creative consultants", etc. were on the show's payroll. Announcers and models were considered daily hires (per diems) and were paid scale. Emcees made whatever they agreed upon with Mr. Goodson, or in the case of Bob Barker, the network. We also used G-T employees who held AFTRA cards as stand-ins for rehearsals and they were paid AFTRA scale.
To the best of my knowledge, Roger was not on the MG payroll but was a per-diem studio P.A. If he was listed on the credits of NYSI as being on the production staff, he was also a per-diem studio P.A. for that show.