They're going out first thing in the morning and getting home long after you're in bed.
Less time for family
British dads work the longest hours on Europe.
They often think they might look like wimps if they complain, but they need to work longer to make enough money to look after the family.
It's not just dads; mums are putting in long hours, too which leaves less time for the family.
It all means parents might not be as involved in what you're doing as you or they might like.