A company I work for observes the Labor Standards Law on holidays?

It is often said that the company I work in ignores the Labor Standards Law. In other words, the company is called "Sweatshop".
When I was asked whether my boss works on national holidays by my father, I replied my boss's holidays are only every Sundays, 3 days in the beginning of the year ,and a week in the summer.
My father criticized it as violation of the Labor Standards Law.
Then I searched the Labor Standards Law enforced in Japan. I found the article saying "Holidays should be given 4 days a month to workers. Employers don't have to consider national holidays."
So, my father's criticism was not to the point. But, if we look over paid vacations. According to 39th paragraph, 4th section of the Labor Standards Law, employees who works for the company continuously are given holidays in accordance with their working years. In case of my boss, she'll be given 4 holidays per year because she has worked for the company at least since three years ago, while I've never heard that she was absent by using paid holidays.
To tell the truth, she offered a paid holiday in order to participate in her friend's wedding ceremony.
But, because she knew that "her friend's wedding ceremony" wouldn't be accepted to her employer as the reason for paid holidays, she told a lie by saying her brother would have a wedding ceremony(It's the lie for her employer) and by saying she was in another branch(It's the lie for clients).
According to the Labor Standards Law, employers can change the day of paid holidays, but can't turn down offered paid holidays.
We have to say that her company violates the Labor Standards Law.