Selling your whole weekend for a little extra cash makes sense until you count what you gave up.

Hours have a price and so does everything they displace, but only one of those numbers appears on a payslip. The shift is visible and the missed rest, practice and people are not, so the trade looks better than it is. When the money is necessary, that is just the situation. When it is optional, the comparison is worth making properly.

Add up what the extra shift actually pays after travel and tiredness, then set it beside what the day would have been for. Sometimes the money still wins. Sometimes you find one shift a month buys back more than it costs.