Statutory notice is the minimum legal requirement. If you've been employed for 1 month to 2 years, it's 1 week. For 2 years or more, it's 1 week for each full year of service, capped at 12 weeks.

Your employment contract can specify a longer notice period than the statutory minimum. If it does, you must usually follow the contractual notice.

Yes, you and your employer can agree to a shorter notice period if both parties are in agreement.

An employer can dismiss someone without notice if they've committed 'gross misconduct', such as theft, violence, or gross negligence.