Pardon my ignorance, Woolies is my first and only job so far, but I spoke to my manager about part time and she seemed fine with the idea... now what are the benefits besides stability? I don't really understand how paid personal and sick leave work. Are they accrued?
Stability, security, leave and safety.
You get a stable roster, with a minimum, contracted set of hours. You are guaranteed AT LEAST the hours your contract states. There is only one way they can drop your hours without you agreeing to it: By cutting all casual hours, pulling all Flex Up hours and calling for volunteers to drop hours. If they get through each of these stages, and are still overspending, they can cut part time (not full time) hours. They still have to pay you for the full hours for four? weeks after you stop working those hours.
You don't run the risk of losing all your hours in place of being fired. Casuals can be "fired", by just cutting all of their shifts in favour of other people's. It's unlikely, but you have that security.
Annual leave is accrued weekly for part time workers, on a pro rata basis. Basically, your hours worked/38 * 152 / 52 is the formula they use. If you work 10 hours in a week, you gain 0.76 hours annual leave. You get four weeks annual leave a year (152 hours for full timers), so every week, you earn 4/52 (or 1/13) of a week's work.
Sick (Personal, it's the same thing) is earned the same way, but with just 11 days sick leave a year (83.6 hours for a full timer). Your formula for leave gained is Hours / 38 * 83.6 / 52. For 10 hours a week, you earn 0.42 hours Sick leave.
The leave you gain changes every week you work depending on hours worked, not hours rostered. If you calculate your average hours at the end of the year, you should get 4 weeks of that average in annual leave, total, and 11 days at that rate sick leave.
You can also join the union as a part timer, which takes $3.95 a week from your pay I believe as a part timer, and basically means you have the ability to take disputes to the SDA, are protected by them etc. In reality it does nothing, but it prevents employers from looking at who's in the union and picking on those who aren't because they don't have the union behind them.
Part time isn't a bad gig, it's certainly not worth it pay wise, but the sheer fact you can take days off without worrying about making your bills for the week, and you get paid holidays, as well as the guaranteed shifts every week, makes it a pretty good deal.
Also, you can always refuse extra shifts without losing hours the next week. You're part time, not on call.