1. Should base on 2400;
2. Pay and no-pay should base on 31 days, sick leave pay on 26 days
3. By MC claim, do you mean the amount of medical bill for see the Dr? Employer need not pay unless there is such benefits given by the company.
4. I think employer is liable to contribute to EPF and SOCSO, please ask the 2 organizations concerned.;
5. No, you cannot.