Teachers will not benefit from a new pay offer by the state for public servants, teachers' union Naptosa said on Wednesday.
National Professional Teachers' Organisation of SA president Ezrah Ramasehla said the union had come to realise this "on closer analysis".
Naptosa welcomed an invitation to return to the bargaining table to find an amicable solution.
"[But] the statements made by [Public Service] Minister [Lindiwe Sisulu] need to be put into proper perspective," Ramasehla said.
Sisulu said on Tuesday that the government had offered civil servants a nine percent raise, made up of a 6.5 percent salary rise and a 2.5 percent increase in benefits.
The government offer included the recognition of long service, an increase in night shift allowance, a cash bonus of 10 percent of an employee's salary on improvement of qualifications, and an increase in shop steward, family responsibility, and pre-natal leave.
It also offered an increase in the monthly housing allowance from R800 to R900 with the allowance to be converted into a subsidy towards a bond on the introduction of the government employees housing scheme, said Sisulu.
Ramasehla said the increase and the benefits would affect teachers differently.
The 6.5 percent salary increase was 0.6 percent above National Treasury's projected consumer price index of 5.9 percent for 2012/13. This meant the "real increase" was only 0.6 percent, he said.
The night shift allowance did not apply to teachers, so it did not form part of the increased wages.
"The cash bonus for improved qualifications will only come into effect in January 2013 and the cash bonus will be paid on successful completion of the studies, which may be in 2014 or even later," Ramasehla said.
He said there were also "no guarantees" on the increased housing allowance.
"Indications are that the allowance will be converted into a subsidy towards a bond once the housing scheme is implemented, and those employees who do not have a bond will forfeit their allowance."