Speaking of the protesters' demands, Mokoena said they wanted better pay and salary increments after they had not received increments for three consecutive years.
“There are quite a number of issues, but I think the most important is that of 7.8% salary adjustment and better working conditions,” he said.
Mokoena said protesters would gather at the country’s capital, Mbabane, on Wednesday morning.
Other issues which workers had cited included calls for the country to be governed democratically to allow for workers to have a voice, according to Cosatu.
“As things stands, workers don’t enjoy their rights, they have a king that does not attend to their needs. Workers want the introduction of a legislation that would protect workers and permit for labour unions,” added Mokoena.
Mokoena said the strike began last week but would soon intensify as more organisations joined in solidarity.