"I just got this news in the last couple of days and when I sit down to work out how we are going to cut costs I am worried because somebody is definitely going to lose their jobs."
Mr Hoerijanto runs the Bolero Tapas Bar & Restaurant in the Albany mall and the next-door Caffe Massimo. They employ 25 and 35 staff respectively.
The combined annual rates bill would rise from $9200 to $21,200 from July 1, according to the proposed 10-year plan on which the council is hearing public submissions.
Mr Hoerijanto criticised the council limit of $6000 on rates remission for a property.
"People do not realise that the whole Westfield centre is seen as one property and the individual tenants cannot get a $6000 rebate."
Westfield development executive Jo Duthie said in a submission to the council that the change to assessing rates on capital value unfairly penalised intensively developed shopping centres.
She said the rates were a direct burden on the 1200 individual retailers operating from the nine centres, with the increases varying from 8 per cent to 186 per cent.