I really dont think its that. I have recently had the same issue but I have had my phone for a while so i did some googling. Looks like its a known problem with the note 3 antenna. That coupled with something in the 4.4 update has caused this for almost all of us note 3 owners.
We would love to investigate the issues with your service at you job. Have you ever had a ticket opened in regards to the service issues at your job? What other type of devices are having issues at your job location? If a ticket has not been filed please private message me so we can get a ticket filed for you.
Follow us on Twitter @VZWSupport
I have the Note 3 and it works great in the 77414 area. Love the phone! Just switched from Sprint because they are still 3G out here on the island, but so far, Verizon has worked well for us. AT&T our here is 4G, but dropping calls.