there are many kinds of contract workers. I was in one which didn't give me any EPF, SOCSO, etc. 0 benefit.

And some don even allow you to resign (but they can sack u immediately). Some pay u for the number of days u work - daily rate.

And there are also some which have the exact benefits with the permanent (except for stuff like dental and optical).

So it really depends on the company.

But yeah, if you are asking if it is legal to have zero SOCSO and EPF for contract - then yes, there are such contracts.