It also appears the six-year-old went above and beyond during his short stint as a tradie, "taking pictures of black birds and spiders", while he also seems eager to learn with the pay packet crediting him for asking "why more times than I have ever heard anyone" ask why.
The grand total for all this hard work? £10 ($NZ19), "minus tax and national insurance", of course.
The tweet has attracted more than 250,000 likes and been shared more than 22,000 times.
"This is lovely – what a kind man! Keeping him in mind for future projects – the builder, not your son!" one person replied.
"This is so special, thoughtful and empowering, I am sure that your son as he gets older will reflect on that act of respectful kindness," wrote another.
But, as we've seen with the fierce debates online in recent times, not all replies saw the adorable side to the innocent note.
"Yeah show him from a young age that all his hard work will be rewarded very minimally and show him he will not be adequately trained for the job," one user responded. "This is actually bullying of a young child and it's horrific."
And another: "As a builder I'd like to add the other side. Construction sites are dangerous places and I've lost track of the amount of times I've had to have stern words with customers that insist on letting their little darlings run around freely after already being asked nicely to stop them."
While others had a lighthearted reaction.
"Love it but he shouldn't be getting tax and national insurance deductions based on his age and income," one person joked.
