The Immigration Act contains a work visa scheme, consisting of 3 individual categories. These cover the general work visa, Critical Skills and Intra-Company work transfer.
The General Work Permit
This visa is based on an offer of employment from a South African prospective employer.
The employer must apply to the Department of Labour (DOL) for a certification and there are a number of criteria that must be met.
Critical Skills
The Applicant must persuade the DHA that he or she has the necessary skills and/or qualifications befitting a critical skills occupation enumerated in the Critical Skills List.
Transfer
The Applicant must demonstrate that he or she has been employed by a foreign corporate entity for at least six months and that the foreign employer will be transferring the Applicant.
https://www.eisenberg.co.za/services/immigration-services/work-visa/