The idea is sound but in practice I believe you will run into issues.
And it all revolves around human nature .
Who gets to set the rate? The people not doing the bin moving will say the bin movers are paid too much.
What happens if someone doesn’t do their duty. Do you sack them, and who sacks them .
In my opinion it’s better to keep it at a long arms length and use independent contractors. If you want to reduce the cost, cast around for alternate contractors. There are plenty available at different prices.
what about maybe a local pensioner or school kid?