Link: Employees should work on hard things, not easy things

‘For a business to thrive, each employee must ultimately be worth three times their wages to the business. That means if someone is getting paid $60k per year, their worth to the business likely exceeds $180k. People often underestimate what they are worth. One way people, especially more junior employees, underestimate themselves is by failing to spend most of their time on things that are really hard for them to do. All employees (not just entry level employees) should strive to have at least 70% of their time doing things that are really difficult. These are the tasks that require the most thought, rigor, and attention. And these are the tasks that result in the most growth.’

Of course, this assumes a capitalist view of work. Work is there to generate profit, not help people pass the time (find value in being alive) and making sure they have the means to eat and such.
Original source: Employees should work on hard things, not easy things