When employed, pulling enough hours to get overtime and continuing to come in on a day that is also a national or civic holiday, thus requiring payment not only of your hours, but time and a half due to the overtime and being paid for the holiday (full day).
Essentially 2.5X the money per hour.
-What are you doing on Labour Day?
-Haven't you worked enough? You're already getting overtime.
-yeah, but now I qualify for over holiday time
-yeah, time and a half... and a and holiday pay.