I'm a tad perplexed on how so many people think that working 11 hours a day is unprofitable. A huge amount of business owners, lawyers, MDs, scientists, freelancers do that. Are all these people so retarded they don't understand what's good for themselves?
We are talking about individuals. Hugely different from one another. Some are smart, others less so. Easily distracted, highly focused. In astonishly good health, or sickly to say the least. Tough as sumo fighters or frail like paper ballerinas.
Coudn't we just say that "unpaid overtime" clause should be considered illegal in any system of law? That the employee is obviously the weaker part in the contract, and therefore should be protected from being strongarmed into signing unfair contract terms? The whole history of civilization has gone in this direction: more balance between the weaker and the stronger parties.
Of course this should be paired by laws which protect companies from unfair competition by those which use slave labor (forced, unpaid or unfairly paid).
It's obvious all this should rather be discussed with your MPs than with your geek peers.
I know, this is just utopia, it is not affordable and cannot be achieved. That's why the US weren't able to abolish slavery, right?
Marx is dead, but justice doesn't feel very well, either.