You cannot list out what an employer can do or cannot do for termination of service during probation. Just like any other termination of service, it ishould be based on fairness. You cannot simply terminate of service without some good reasons and the employee involved must be given opportunity to defend himself.
The Labour Department and the Industrial Relations Department are places where an employee can seek redress.
KL Siew has put up a sister site by the name of mylabourlaw.net, which is in effect a more user-friendly version of the present popular pesaraonline.net. The site is in the process of being fine-tuned but it is fully functional. You are invited to visit the website at http://www.mylabourlaw.net and give your views or suggestions. Queries can be posted and be responded from there as usual.