Salary benifits

Hi…1)At what basics foreign mnc’s give increament to employees as a company at stable/good in business …

  1. Increment will be in percentage or a amount basics

  2. As an employee in fixed salary then there will be an increment or not ?

  3. Is Foreign mnc follow govt regulations for increment ? if yes what is the govt regulations for foreign mnc increment procedure or by percentage what is the percentage?

  4. Whether the increament hike is from gross salary or basic salary ?

  5. If company fiscal year is oct to oct , if company increament or bonus is effecting from jan , Is they will credit whole sum amount ( oct - dec ) on jan month salary ?

  6. At last, is fixed salary is good ? or variable salary ?

Reply person sir/madam, Thanks in Advance for your reply and valuable time…