Contracts normally state whether you have a probationary period or not and exactly how much notice is needed irrespective of the probationary period. I worked for a company a little under a month but because I didn't have a probationary period I had to pay my months notice in leui.
If completely unsure then ask ur HR dept.
If your contract states one month's notice, then you have to give one month's notice, I'm afraid, or one month's salary in lieu. A contract is a contract. It doesn't matter that you're on probation.
I thought there was no notice required if you are in the first month only of a clear probation period. The rules change for the period after the first month when you are still on probation. However, the written contract would be the primary factor. If there is no probation period stated then the laws governing such periods could not be brought into play.
S 6 of the Employment Ord says if no termination period is stated for termination during probation,then no notice is required in the 1st month's probation.,but 7 days minimum notice is required therafter.However if there is such a termination notice,then the same applies for the 1st month's probation,but therafter,according to the period specified,but not less than 7 days.