Global banks expect to increase base salaries by less than 3 percent this year and most are not planning to overhaul their pay structure in the face of tougher European Union rules on bonuses, a survey reported on Thursday. Salary increases across banks, insurers and other financial services firms are expected to be between 5-8 percent in emerging markets, 2-3 percent in North America and 1.5-2 percent in Europe, according to a survey of 63 firms by consulting firm Mercer.