I have two routers. One that acts as a client and one as a server. I got them because I want to travel and I want to make sure that my connection is from NY-USA.
What is the point of setting up the Server router if I can get a VPN on my Client Router with my VPN connection pointing to the NY-USA? Is the point of connecting my Router client to my Router Server to "simulate" my computer is connected to my home network?
My job only cares about me being in NY-USA. Do I need both routers?
Correct. The IP of your commercial VPN is probably well-known, and your employer may (but probably won't) be able to figure out that you're using a VPN to pretend you are in NY.
Can they know I'm outside the USA even with a VPN? I use the VPN even when I'm in NY. Since VPNs have more benefits than just changing your location.
I know you mention the can know it's a common VPN IP, but can they know if I'm actually inside or outside the USA when I'm using it?
There are other methods to figure it out (wifi geolocation etc.) - but I doubt that they would use those - if you're using a VPN with your employer now, and it's OK - I wouldn't worry about it.
Most VPN IP's are typically blacklisted by streaming services, and also FTA TV streaming like BBC, ABC (Au), SBS (Au) TVNZ etc.
Maybe your employer isn't onto this (yet). (Unless you work for the CIA, of course) 
There's a few threads here about this, do a search.
Good luck with it!
Thanks so much for your response!
It sounds to me like the safest bet is to get my Server Router configured
I did warn you of this possibility... 