[hakfoo]

I think it's an interesting take around the scheme I've seen IRL: we have various religious missionaries around and some people figured out that they can be coaxed into performing free manual labour (i. e. gardening work) because they can write it off as a 'good deed' and with the hopes you'll listen to their spiel afterwards.

I could see it as a burnable source of labour, not as a means of pushing a values system though.