Johannesburg - The General Industries Workers Union of SA (Giwusa) will join the strike in the engineering sector, together with the Chemical, Energy, Paper, Printing, Wood, and Allied Workers Union (Ceppwawu), SABC reported on Sunday.
Giwusa president Charles Phahla said workers would also march from the Workers' Library to the Chamber of Mines in Marshall Street in Johannesburg on Tuesday.
The unions are demanding a minimum salary of R6 000 per month and a 40-hour work week.
Phahla said that even though the community would be affected by the strike, there was no other way for the workers to communicate their frustration to their bosses.
He said petrol and medicine could be in short supply due to the strike.
Both 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).
The unions, which represent about 170 000 workers, started a countrywide strike on June 4.
Four Numsa members were injured when police opened fire with rubber bullets during strike action in Krugersdorp, west of Johannesburg on Thursday.
Giwusa president Charles Phahla said workers would also march from the Workers' Library to the Chamber of Mines in Marshall Street in Johannesburg on Tuesday.
The unions are demanding a minimum salary of R6 000 per month and a 40-hour work week.
Phahla said that even though the community would be affected by the strike, there was no other way for the workers to communicate their frustration to their bosses.
He said petrol and medicine could be in short supply due to the strike.
Both 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).
The unions, which represent about 170 000 workers, started a countrywide strike on June 4.
Four Numsa members were injured when police opened fire with rubber bullets during strike action in Krugersdorp, west of Johannesburg on Thursday.