Northam Platinum is in dispute with workers over wages after talks with the National Union of Mineworkers and Solidarity derailed at its Zondereinde division, the company said on Thursday in a statement.

Northam said NUM was demanding an overall wage increase of 20 percent compared with the company's offer of 5.8 percent for semi-skilled workers.

For skilled staff, the company said it offered a two-year agreement of a 6.6 percent wage rise in the first year and 6.8 percent for the second year, while the union demanded of 12 percent.