I had a friend who was a former police officer and he was stationed in Yishun NPC no less. He said the things that happen everyday are:
1) Respond and settle family dispute.. (son/daughter scold/push/beat parents/granparents, siblings fighting)
2) Respond to neighbour disputes ( too loud TV/Radio, walking, cooking curry, bbq at corridor, 6pm sharp call to complain renov, carpark issues, littering issues)
3) Respond to cats stuck on corridor ledges, mscp, cat scratch cars/bikes
4) Illegal moneylending
5) Respond to ppl complaining about "siao lang".... because yishun "
Siao lang Ji tua tu"
He gets the occasional dead body in house visits whereby they have to help clear decomposed bodies... very interesting career if you ask me.