Two questions about ARC and work in Taiwan

I’ve edited this post to show that I am asking two questions, and possibly three.

Question 1:
What is the minimum number of hours per week one must work in order to qualify for an ARC? I mean for an English teacher.

Question 2:
Also, I heard that if a school hires you as “full time,” they must provide a minimum number of paid hours. Is this correct? What is that minimum number of hours a school must give you if they hire you as full time?

If question 2 is not right, maybe I mean: what is the official maximum number of hours a foreigner can work per week in Taiwan? (I know that people can work more hours under the table.)