Veteran banker Uday Kotak on Monday called for the RBI to expand its balance sheet to mitigate the economic impact of Covid. He also asked companies to bear the cost of not sending employees out and said that there was a need to plan for a third wave.The Kotak Mahindra Bank chief said that the RBI had already lent its balance sheet by announcing a buy-back programme for government securities, however, more could be done given the circumstances.Kotak Mahindra Bank has told employees not to come to work for a week unless they are part of essential services and authorised by senior managers to leave home, he said. During the period, the bank would operate branches with minimal staff.Kotak, who is also president of Confederation of Indian Industry (CII), followed up his call for restriction on economic activity to prevent Covid transmission, saying that industry should voluntarily curtail all non-essential economic activity requiring physical presence of employees at the workplace for the next two weeks. He said that auto majors like Maruti Suzuki, Hero MotoCorp, JCB India, MG Motor, Honda Motorcycle and Scooter India have halted production and companies like TCS and Kotak Bank have adopted work-from-home.