OpenVPN traffic detection

Hello,
In a company, an OpenVPN server looks like this:

Internet ---> Server ---> Tor

Server has a public IP (1.2.3.4) that clients connect to and another IP (1.2.3.5) for connecting to the internet. When clients connect to server, does a third party (e.g., the government) know whether the traffic they are using is from the Internet or the internal network?
Using OpenVPN, employees can connect to a company's internal network and use it for file transfers and more. I just want to know if a third party (e.g. government) can look inside OpenVPN traffic and find out if the traffic is internet-related or internal network!

Thank you.