Household income benefits trap - DC income?

[waiting4ds]

My DS (17) is in Year 12 and has a casual job. He was talking to one of his school friends about it, and the friend (also 17) said he isn't allowed by his parents to get a part-time job because it would push their household income over a threshold for losing benefits. Is it really the case that under-18's casual wages are included in household income calculations while they're still in full time education? If so, I guess I'm a bit taken aback that they would be discouraged from getting valuable work experience.

In the case of child benefit the threshold is pretty high and none of my kids ever met it so I could claim CB without any problems. IIRC it’s something like 20 hours per week which isn’t recommended by our school anyway. (They recommend maximum 8-12 hours term time)

Still in ft education they can work under 20 hours without affecting your benefits I believe...

Thanks - I'll try to look that up. I thought it didn't sound right.

Hmm, the only thing that I can find that seems to mention children's income is this page about calculating income for Working Tax Credits: https://www.gov.uk/guidance/tax-credits-working-out-income#other-income

It says don't include: "income your children have had, unless it’s taxable in your or your partner’s name".

However, I obviously don't know if this is the type of benefit my son's friend's parents are receiving.