According to our calculation rules as below ;
1.5 times beyond normal working hours
1.0 times for working hours on weekend or public holidays
3.0 times beyond working hours on weekend or public holidays
Since, working on Thursday (after 24 hrs./week) is her weekend.
Therefore, We will calculate her OT. follows,
08.00 – 17.00 : 8 hrs. x 1 item
17.01 – 18.00 : 1 hrs. x 3 item