Banks in the UK are considering giving investment bankers allowances to make up for lower bonuses mandated by new EU rules. This is one of the mechanisms banks are considering to be able to pay competitively. EU rules do not limit total compensation making it possible to shift pay given earlier as bonuses to the new 'allowance' category. For instance a 1.8 million euro bonus might be dropped to 1 million euros and 800,000 euros given as an allowance. Such an arrangement means banks can adjust the allowance as markets and regulations change. Increasing fixed salary would mean effects such as higher pension costs. Most of the 35,000 higher level banking employees to which the EU rules apply work in London, England. The UK Prudential Regulation Authority has come out against the EU bonus rule and the UK has taken this up in a legal challenge at the European Court of Justice. U.S. and Asian banks are deferring parts of bonuses and paying in a mix of shares and cash.