It's not just RCAs. It's all non-career employees, whether you work for the PO or the State Dept. Remember, PTFs are part-time folks, but they are also career employees.
As to our Union negotiating for health benefits for RCAs. Just because they haven't gotten them for us doesn't mean they haven't tried. Remember that the PO also has to agree to it before it can happen.
80% of success is just showing up - Woody Allen