Metrobus in Johannesburg said in a statement on Thursday morning that it has been served with a notice to strike by one of its unions.
The strike, due to start on Monday 28 January, is being organised by the Democratic Municipal and Allied Workers Union of South Africa (Demawusa) according to Metrobus.
According to Metrobus, negotiations to avert the strike are at an advanced stage.
"Metrobus management is currently engaging with the unions, all relevant stakeholders, the public and all valued customers will be kept abreast with the developments."
Fin24 could on Thursday morning not immediately reach Demawusa for comment.
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