QUOTAS should be set for the number of overseas workers allowed to train in the territory, the Government was told yesterday. Members of the Legislative Council's education and manpower panel were told about 5,000 training visas were approved a year, many for mainlanders. Democratic Party member Cheung Man-kwong said it was ridiculous that employers had brought in so many people over the past few years. He said the Government should plug the loophole by fixing a quota when the unemployment rate was high. But principal immigration officer Lai Tung-kwok said that although there was no quota, employers were unlikely to abuse the policy, because the majority of visas were for no longer than three months.