In many cases, the parents catch the chaos from work and bring it home.
For a while I had a boss who was very stress inducing. Several members of the team started having problems at home with their relationships as a result. I lived alone and thought I was fine, until I noticed I hand makes on my hands from nails in the morning from clenching my fists as I slept all night… something I only ever experienced while working for that boss.
Sometimes stress has to be rooted out at the source. A person can only buffer so much for so long.