The specific job includes customer service. It's what they are being paid for. Employees who do the job poorly are at greater risk for replacement by replacement hires. This is why many companies ask customers to rate individual service providers.
If you equate smiling at someone, or just being generally courteous, with "emotional labor," you need to make an emergency appointment with your therapist.
Being a good human being more often than not (occasional bad moods notwithstanding) should be a non-functional requirement for any job where you interact with other people. I have no problem with anyone, in any role, getting fired simply for being an asshole. The world would be a happier and better place for it.
> If you equate smiling at someone, or just being generally courteous, with "emotional labor," you need to make an emergency appointment with your therapist.
This entire conversation started based on an example that smiling brought economic benefits, not that you should do it because of socializing benefits. Answering in economic terms only makes sense.
I didn't say not smiling makes you an asshole, I'm making two separate points. The first was that expecting people to be generally courteous to other people, whether they're explicitly paid to or not, is something we should expect from everyone. It's called just being a human being. And again, everyone's allowed to have bad moods now and then. But in general, if you go through life with a scowl on your face and approach things from a standpoint of "I'm not being paid for this so I don't care, I'm not doing 'unpaid emotional labor,'" you're just kind of a jerk. That's the context of the last couple comments in this thread so it's important to keep the "I'm not being paid to smile so I'm not going to smile because that's labor" thing in mind.
The second point, which is related but I think still separate, is that I wish just being an asshole was enough to get fired. I sort of had it in my head but didn't really articulate that I was thinking of being an asshole as a more extreme version of what we're talking about, what I refer to above as just being kind of a jerk. Maybe on a scale of 1-10 being a jerk is a 3 but being an asshole is a 7 or 8.