Of course this analysis assumes you can find additional work, eg overtime or PRN job, otherwise its purely academic. Also obviously who would drives 2 hrs just to work an hour? PRN comes in shifts.
Yes, but this gives you an hourly cost, not cost of a shift. Whether it's a 4,6,8,12 hour shift does indeed matter, which is why I put my criticism that not all hours have the same value.
xiphoid2010 said:
There are only so many chores around that you can delegate. Maybe 8 hrs of yardwork + cleaning/laundry per week. In Texas, hiring some to clean a 3000 sq feet house once a week cost ~$160, and less than that for yard work. So 2 shifts would pay for a whole month,
Okay, so you take 2 shifts per month to offset the cost of the cleaning. You're still left with plenty of open time during which you cannot be earning income, where you could have done that chore instead.
I think this would be useful when you are nearing the limits and actually have to choose between another shift and a chore. If you normally work 6 days per week, then maybe it is something worth considering. For most of us who average 3-4 days/week, picking up an extra few shifts won't push us into "no time for chores."
It's like that old analysis that showed that the average income per second of Bill Gates was such that it wouldn't be worth it for him to pick up a $100 bill at his feet. In that precise moment, he is not likely to be performing another task that would have earned him the money, so it's not a true tradeoff of time/money.
xiphoid2010 said:
If you let frugality derail the plan, you'll end with lots of money but no time/energy to spend it.
At a certain point, frugality will win the time/money tradeoff as you will no longer have to work at all, thanks to having the money. An oversimplification, but if you could save and invest the money you would've spent on hiring household help over a career, you'd likely be able to retire years earlier.
None of this will be a true tradeoff in most practical scenarios. Why outsource labor when you already have an excess available? It's just laziness.