Johannesburg - Airline operator Comair's [JSE:COM] share price fell more than 3% by Friday, the third day of a strike by ground staff demanding higher wages.
Shares in Comair, a franchisee of British Airways and the owner of the low-cost airline Kulula.com, declined by 3.1% to R3.10 by 10:50 GMT.
The share price has fallen by more than 5% since Tuesday, after the United Association of South Africa said its members were preparing to strike.
The union wants a 35% increase over three years, while Comair is offering a 22.5% increase over three years, the airline said on Tuesday.
Both the company and the union were not immediately available for comment.