I don't understand how you think this is going to work out in the long run.
Business trips are in people's contracts, yours included.
You incur extra expenses for wrap around care (many people would argue that your dh could assist for a week, but if you insist he cannot -fair enough).
Jacob also has children and his 2 daughters do drama lessons on a Wednesday but since he's on a work trip, who is going to take them?
So he requests taxi money so they can still go.
Sally has a dog so needs someone to walk the dog, she also asks for extra money, cause why should she be out of pocket for a business trip.
John is an avid planter and needs someone to housesit to water all his plants - he also want the business to cover that.
I do a weekly non refundable yoga class which I'm now missing out on. I want that paid back because I don't want to be out of pocket.
I mean how would we draw the line.
Expenses for wraparound care in all circumstances? Just single parents? Extramural activities? Kids and dogs?
Plants? Grandmother's that you look after?
Your sisters kids that you babysit on a Tuesday?
You've got to understand why this wouldn't work?