Local media have described it as the first major strike by public servants in the decade.

It is expected to cause disruptions in some government departments and airports.

Members of the Public Servants' Association (PSA) had for weeks staged lunchtime pickets, but have now decided on a full-scale shutdown in major cities across South Africa.

It follows a breakdown in negotiations between the union and the government.

The union is holding firm on its demand for a 6% increase in wages, rejecting the government’s final offer of 3%.

Services such as the issuing of passports, death certificates and driver's licenses will be affected.

Meanwhile airport authorities have warned that the industrial action may cause delays at passport control and have warned travellers to arrive for their flights at least four hours before departure time.