I believe your own maintenance department installs them.
Please instruct them (or whomever installs them) to install these jacks recessed a couple inches from the table's edge.
I once used one of these (or a similar brand) while playing at a poker room in Vegas (Mirage?), where they were installed almost flush with the edge of the table/arm rest.
After a while I noticed that my phone was no longer charging.
I like to sit close to the table. As a result, the plug which was sticking out of the jack was poking into my belly. Although somewhat uncomfortable, I ignored it.
When I saw my phone wasn't charging, I discovered why: My belly, pressing into the plug, had broken the wire as well as the jack.
If the jack was recessed two inches, that wouldn't have happened.