A rally was taken by employees of all the cooperative banks in the State here on Monday demanding a pension scheme for them. P. Balakrishnan, general secretary of the Tamil Nadu Cooperative Bank Employees Association (TNCBEA), said though the State government had given assurance in 2000 that it would implement a pension scheme for them no further step had been taken by it despite various agitations launched by the employees. He said it was the cooperative bank employees who had been left out of pension scheme.