We just work flexible hours at work. Come in whenever and leave whenever. As long as the job is done NAB are happy for us to do whatever we want. Funny thing is most of us end up working longer hours because of this.... Sneaky NAB lol.
When OT is on offer we just come in/work from home/go to a business banking centre and do what we want then tell them. Some people literally do 40+ hours of OT when it's on offer