If a person wants, he can work all the days of the week, but if he works like this, he will definitely be at risk of health in the long run. Moreover, holidays are usually fixed for his personal. When these days are spent with the family, a person gets pleasure from this time, which is very useful for him. There are some people who are very greedy for money, they keep working without taking any rest due to greed for more money, they are definitely harming their interests. Although it is not seen in the short term, but in the long term, the person can feel it. I think holidays are completely a person's personal life and if he does not spend this time, but gives it to the family, then the family is also satisfied, he himself can enjoy and take rest.
I believe every person if still difficult with financial condition keep working every day during at holiday, exactly at holiday or weekend have difference with increasing salary payment and make many people don't care with holiday and keep working to earn much salary. However, working all the time until overtime on holidays has a bad impact on health in the future, must be balanced in maintaining health and need a minimum of one or two days of rest a week after working full time.
Personally, if some one have family at weekend is most important moment spent with children, wife and your family by taking rest from working, I believe there will definitely be regrets someday for being able to spend time with family instead of having to work until the holidays.