On so many levels. I don't think making out with someone at a company event is OK, period. Even less if they also work at the company. Even less if they're your report. Even less if you're powerful within the company (i.e. a tone-setter).
To be clear, the reason it's not OK is that a professional context should not also be a sexual context. It's not about protecting the person you're making out with. It's about everyone else. This is the same reason that excessive PDA in the workplace can be sexual harassment of other employees, even if both parties to the PDA are consenting.
To be clear, the reason it's not OK is that a professional context should not also be a sexual context. It's not about protecting the person you're making out with. It's about everyone else. This is the same reason that excessive PDA in the workplace can be sexual harassment of other employees, even if both parties to the PDA are consenting.