Not the OP, but I'll reframe that as "teach them the value of accomplishment" because I've always had an issue with the concept of work being its own reward.

One of my 7 year-old's chores is refilling the bird feeders. He really likes doing it and is excited when new birds come to visit. There's a clear work->reward path there.

> He really likes doing it and is excited when new birds come to visit

But will he feel the same about flipping burgers? I agree - it's a dangerous thing to teach work is it's own reward. Work can be enjoyable, but not always.

Teach them that it takes work to run a house. Dinner doesn't just magically appear, dishes don't wash themselves, your socks don't pair up on their own. Makes them more grateful and also capable of taking care of themselves.

If it's incentivized by their receiving something of value to them after the completion of the chores.

What do they receive in this case?

Depends on the age. For an older kid, maybe extra spending money. For a younger kid, maybe a special outing, or a special treat like a frosted cupcake.