UPDATE 1-SAfrican union, employers reach building wage deal

* Parties hope to conclude agreement on Tuesday

* NUM says to consult members before ending strike

* Strike threatens World Cup stadiums

(Adds detail, quotes, background)

By Muchena Zigomo

JOHANNESBURG, July 9 (Reuters) - South Africa's National Union of Mineworkers and employers said on Thursday they had agreed a plan for better wages which could end a strike threatening to delay work on stadiums for the 2010 World Cup.

"After intense negotiations...a framework of an agreement which contains an improved offer has been established," the union and employers said in a joint statement.

"Both parties commit to persuading their members of the acceptability of the framework and will endeavour to conclude an agreement by Tuesday."

Lesiba Seshoka, spokesman for the NUM, which also represents workers in the building sector, said the union would only decide on ending the strike after consulting its members.