An advisory committee on labour which includes unions had met on the issue but had so far not reached a final agreement.
A ministry statement quoted labour minister Athauda Seneviratne as saying that another meeting would be convened for to further discuss the issue and reach a speedy settlement.
"By working only five days the cost of operating firms will be reduced and it is expected that jobs of workers will be made more secure," the minister was quoted as saying.
Sri Lanka's Employers' Federation of Ceylon (EFC) a body representing private enterprises says spreading the Saturday work over the week should not require overtime as workers also get an extra day off.
"Right now as the result of global downturn some of the factories and some of the companies are facing loss of orders," direct