Here the minimum is 1 week per year of employment. The laws tend to favor a severance that reflects the ability to get a similar job in the marketplace. So, a manager or supervisor who is well paid, may get 2 or even 3 weeks per year (if they were around 5 years).
BUT!!
I worked for a projectized engineering company. All of their standard offer letters when hired indicated that the severance at the end would be 1 week per year of employment. We also had to give 1 week per year of employment as notice (it worked both ways). Several times the low severance was challenged by terminated employees, but the offer letter always stood up. e.g., I had a lead manager / engineer type, with 25 years experience but only 4 years with the company, who only got 4 weeks, challenged, and lost because of the hiring letter.
So -- read your offer letter again because it may say something about this.