David Cameron has decreed that all Conservative frontbenchers will declare whether they employ family members and how much they are paid.
The good news for Peter Hain's Mum is that she isn't the only octogenarian working for an MP.
Cheryl Gillan's 80-year-old husband, Jack Leeming - a former senior civil servant at Revenue and Customs and the Treasury - works for the Shadow Welsh Secretary in her constituency.
Having worked at the World Bank and as Director General of the British National Space Centre, he can boast a pedigree not found among that many parliamentary researchers.
"And yes, I do review him once a year," Ms Gillan told me. "If he didn't cut the mustard I'd ask him to look for alternative employment".