What is this type of payment?

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31KB, 500x375px

Say I just opened a double donut business and I call it Check'em Donuts... whatever.

I hire Jim, Sal and Ivy for different positions in the store. All different pay rates. I tell them to sign-in their hours everyday but that I have no money after opening the store, however once money starts coming in I will begin paying them proportionately to their payrates and the money the store rakes in.

For example, after one day of work Jim should normally get paid $25, Sal $35 and Ivy $40.

But that day we only made $50. So I split it this way:
Jim gets $12.5 (i still owe him another $12.5)
Sal gets $17.5
Ivy gets $20

Is there a word or term for this kind of payment style? I was thinking Deferred Payment, but it's more complicated than that.