He said the strike would be observed throughout the country from 9am to 10am daily until next weekend and added that the workers would change their strategy if the management did not accept their charter of demands.
The workers had presented the charter of demands to the management in December.
Mr Memon said that employees would remain peaceful during the strike.
The National Industrial Relations Commission (NIRC) on Saturday stayed retrenchments.
The stay was granted by NIRC member Mohammad Shabbir Jamal on a petition filed by the employees’ federation against the bank’s president.