I had 6 weeks of annual leave saved up. Im changing to a job that pays significantly more than my current salary. When my boss asked me what it would take to stay, I asked for a salary increase of 35% which he begrudingly gave me. Then I quit. This equated to an entitlement payout of about $10,700 instead of $8000 on my previous rate, an extra $2700. And the new job still pays more than the increased rate I asked for.
My bad, unused, in my country employer have to make sure you use your PTO or he has to pay you.
And if you have PTO from last year you can inform employer that you take it 14 days before and he has to approve it.