Upto 2 years requires 2 weeks then an extra week for each year upto 12 weeks. but there are wsys to get out earlier with pay but make sure you have another job to go to first.
Unless stated in a contract your employee can only ask for 1wks notice for every full year you have worked for them to quit a job.
2 to 4 wks
If you've gotta go just go. It's not the law to work notice.
2 weeks upto 4
4 weeks notice needed when leaving employment
Two weeks notice
If you haven't worked there long it's 14 day but depending on how long you have worked it could go up to 3 months