Why one national process does not exist
Immigration control and labour regulation are handled differently across the country. Sabah and Sarawak retain their own labour ordinances and departments, a legacy of how the federation is arranged, so the permit path, the licensing body and the employment law that governs the relationship are not identical to the Peninsular ones.
This is not a formality. The timeline, the portal you use and the rights framework can differ, which is why a checklist written for Kuala Lumpur can quietly mislead a household in Kuching or Kota Kinabalu.
Start from the place of employment
The right question is where the worker will live and work, because that determines the regulator. A Peninsular employer follows the federal route; a Sabah or Sarawak employer confirms the current process with the state labour department or the GENESIS/HAVEN portal directly.
The location guides on this site set out each region separately for that reason. When a rule or figure is quoted, check which region it describes before assuming it applies to yours.