Johannesburg - Ceppwawu and Giwusa are set to join the engineering strike on Monday, demanding higher wages.
The Chemical, Energy, Paper, Printing, Wood, and Allied Workers Union (Ceppwawu) and General Industries Workers Union of SA (Giwusa) last week indicated that their members would embark on the strike from Monday.
The unions were joining earlier strikes by the National Union of Metalworkers of SA (Numsa), the Metal and Electrical Workers Union (Mewusa), United Association of SA (Uasa), Solidarity and the SA Equity Workers Association (Saewa)
Ceppwawu and Giwusa are demanding a minimum salary of R6 000 per month and a 40-hour work week.
Strike action by these unions could see supplies of medicine and petrol interrupted.
Members of the unions, which represent about 170 000 workers, started a countrywide engineering strike on June 4.
