I always take minor issue with this.
I feel like one uberhard worker has an unhealthy return. But a group of uberhard workers have a healthy return - they compound each others hard work and build a prosperous _environment_.
My wife and I work very hard, as do our colleagues. But together we've built a pretty healthy routine, home, and (for now at least) financial situation. This has enabled us to have kids more easily than most, travel, etc.
The hardest workers /busiest folks I know are farmfolk relatives, and they also have a level of social connection and family connection that I envy all the time. It's mostly from them showing up to help with _everything_.