It can be installments based on milestones - I think paying for time is one of the stupidest things you can do when hiring - people would do things so much slower to get more payment or do less work, so it ended up wasting other people's money and their own time.

Now, I only pay people for their work instead of their time, so we discuss what should be done with a contract, and then you do it as you please in your own time, I would leave you alone, but feel free to contact me if you need anything else; and when it's done, I pay - so simple.

But then it also depends on the work itself, like is it ongoing? repetitive? But then the same thing, you negotiate the contract which is fair for both, then focus on the result instead of the time, as

At the end of the day, it's about contracts - think about what's good instead of doing the default 8-hour workday salary.