hum.. as i can remember my fren told me...
1) if u late for 1/2 hour, consider u r on Emergency leave
2) u can take emergency leave as many times as u want and wont deduct from your annual leave
3) if u MC for more than 3 times a year, your bonus will be affected.. so if u sick, better take emergency leave rather than take MC.. Wired   

not sure if diff dept got diff policies.. 

yes.. for them emergency leave = unpaid leave.. but it wont affect your bonus..
if MC then sure affect your Bonus..

but 1 thing, if u do operation thing (not go out and sell the card reader machine), u'll be VERY FREE most of the time.. my fren work there free till duno wat to do from 2pm - 6pm... always goyang kaki & call fren to chit chat.. most of the operation ppl are very free.. free till boring...

if u want earn more money, dun do anything during working hour, wait till 6PM then onli start work so that can claim OT and when u claim a lot of OT, boss said u hardworking (This is REAL)... coz my fren always finish work b4 6PM and get question from boss why no work OT and other ppl got so many things to do till wanna work OT.. Good Management    they work based on quantity not quality..