Disgruntled ANZ workers are on strike again today as they fight to put a stop to the bank's proposed flexible working hours.

The strike, which is set to continue into Labour Weekend, will affect a number of branches around the country.

FIRST Union Retail, Finance and Commerce Divisional Secretary Maxine Gay says the workers just want to know their hours of work are guaranteed.

But she says the bank is pushing for a clause in the staff contracts that could see workers only being given four weeks notice of their shifts.