So you say it is fine to charge daily - e.g. the invoice would mention "1 work day" even if you "show up"/work 2 hours on that day? Or, in case of weekly billi

So you say it is fine to charge daily - e.g. the invoice would mention "1 work day" even if you "show up"/work 2 hours on that day? Or, in case of weekly billing, invoice mentions "1 work week", and you've "showed up"/worked only 1 or 2 days on that week (and even not "full-time"/8h on those days). Or, do you mean to never mention the time in the invoice and just bill for particular completed tasks? in the latter case, you will be in a constant negotiations/agreements regarding the scope and costs of particular tasks. The time-based charging doesn't have this issue - again, I mean when you have an "open-ended" work inflow, so you don't say/negotiate in advance how much time you spend on particular task... So it is work/get_paid as you go.