Diamond giant De Beers should offer mine workers a 15% pay rise and ensure a minimum payment to workers, South Africa’s National Union of Mineworkers (Num) said.

NUM, which represents the majority of workers at De Beers, demanded a 10% allowance on basic salary for underground workers, artisans and other employees with specialised skills.

It also said that the lowest-paid workers should be given a minimum of R5,000 and that workers should receive five days paid family responsibility leave.

In addition, NUM wants three days paternity leave for male workers and four months fully paid maternity leave for female workers.

De Beers should also contribute 70% to workers’ medical aid and provide a housing subsidy of R3,500 or 25% of the monthly repayment of the mortgage bond.