"The result is that in families on lower incomes the women have absolutely no choice but to work, often with adverse consequences for family life and society as a whole – in that unloved and undisciplined children are more likely to become hoodies, Neets [not in education, employment or training] and mug you on the street corner," he wrote.
The essays have caused uproar in the run-up to the election in Britain, with shadow education secretary, Angela Rayner, saying "Boris Johnson has nothing but contempt for women and working-class people".
"For him to speak about us in such a disgusting manner shows just how out of touch he is. It is clear he only ever stands up for the privileged few," she added.
This is not the first time Johnson's old writings have come back to haunt him.
As a columnist for the Daily Telegraph - a job for which he earned more than $550,000 a year - Johnson wrote that Muslim women wearing a burqa looked like "letterboxes".
Questioned over this, and other remarks, he said he "genuinely never intended to cause hurt or pain to anybody" but added he has the right to "speak out".