issue the Show Cause Letter personally to him with a witness, if he refuses to acknowledge receipt then you can just note on your copy that letter was passed to him on what date and that he refused to acknowledge it. The witness should sign the copy to confirm.
If he fails to reply then issue another one for insubordination cause its a legit directive for him to respond to the show cause. Conduct another DI on him and he fails to turn up, proceed the DI on ex-partie (with his absence). Repeat of a similar misconduct is a gross misconduct. You should look up Ind Court cases on this.
yoong chee weng,
there 2 types of employment contracts i.e. implied and applied. going to work with all the above is an example of applied terms of contract. your pay slip, business card etc are proves that you are an employee of the company. if you have been getting all these benefits continuously from the company before they started cutting it, then it should not have happened.
Ask for a written revised term of this matter. Else, report yourself to the labor office and IR department for victimization