Bank employees labor laws

Do Bank branch and Bank back office employees fall under shops and establishments act or is there any other act ? If a private Bank back office employee is made to work for 12 hours or more per day and made to work on most festival holidays what action can turn employee take ? Is there any law at all protecting the bank employee. What are the points and course of action specifically ?

IF shops and establishments act is applicable to bank employees what is the meaning of the sentence - The spread should not exceed 10.5 hours. How many hours of overtime are allowed in total.

Thank you