Find 10 facts about how UK employees are affected by problems parenting their kids

Corporates and businesses employ many adults who are parents.
I want you to research 10 facts, with statistics, about the impact that employees dealing with children has on UK Businesses. And let me know the source of your facts, (research paper, newspaper report, etc.) so I can back them up.
The impact on businesses could be that employees are tired due to babies and children keeping parents awake at night. It could be they are distracted working out how best to deal with a number of parenting issues such as children's homework, tantrums, rudeness, hitting, etc. Or it could be the stress of having a teenager who is defiant or going off the rails.
The impact could be lack of sleep, lack of focus or concentation, lateness or absenteeism.
If possible I would like to know the financial impact on UK businesses that parents dealing with children has.