* Agreement subject to members' approval
* Union to consult members on Monday
JOHANNESBURG, Feb 20 (Reuters) - South Africa's main truckers' union has agreed, subject to members' approval, to a new pay offer aimed at ending a week-long strike, unions and employers aid on Sunday.
Three smaller truckers' unions had agreed on Saturday to a deal that offers a 9 percent pay rise this year and 8.5 percent next.
"The union parties will be consulting with their members (on Monday) on the in-principle agreement and will be recommending acceptance," the unions and the employers' federation said in a joint statement.
The South African Allied Transport Workers' Union (SATAWU), the biggest in the industry, had been given until Sunday to accept the offer.
SATAWU first vice president June Dube said if his union's members rejected the agreement, the strike would continue.
The strike, occasionally violent, has caused a few petrol stations to run dry and raised concerns for businesses and the state power provider, Eskom.
SATAWU and three others walked off the job last weekend, demanding a 20 percent increase over the next two years, as well as housing allowances and shorter hours.
More than 30,000 truckers serving businesses in South Africa and neighbouring states have taken part in the strike. (Reporting by Olivia Kumwenda; Editing by Kevin Liffey)