Woo, Christmas chapter. Thanks!
Hm... I can't ask everyone in the world this, but most people I know would still do things even if there was no specific label like "labor." If all necessities are taken care of, people will still work. That's where the self imposed structure from the beginning comes in. Most people just don't know what they like doing. This may not specifically be the point of this chapter, but I think some of it is rooted in that.
Also, I can't blame the guy for mobage addiction. That shit was specifically designed just for that. A literal "don't blame the player, blame the game."
And man, the mangaka did just draw an entire page just to show off how hot Sensei is