Tata Consultancy Services , part of Tata Group, has said that the company will spend Rs 2,628 crore to pay a special one-time bonus to its employees to mark the 10th anniversary of its initial public offering . Tata Consultancy Services , part of Tata Group, has said that the company will spend Rs 2,628 crore to pay a special one-time bonus to its employees to mark the 10th anniversary of its initial public offering .