You absolutely do not want to install a bootleg game cabinet at your place of employment if it is someplace large enough to have upc bar code IDs. Install a Pac-man on free play.
This.
Get a 60in1 cabinet for $3k and call it a day.
So avoid installing a bootleg game cabinet, by installing a bootleg game cabinet?
Anyway, basics are simple, you can't legally operate a MAME cabinet in a commercial environment, a workplace would count as this. Likewise you can't legally operate a bootleg board (38-in-1, 60-in-1 etc.)
Your employer would have to be comfortable in running pirated software without any of the required licenses for any scenario except running a single game original cab for your intended market. Is your employer comfortable with that?