The Mandatory Provident Fund Authority will investigate allegations that two logistics companies have not made contributions for their drivers. The Container Transportation Employees General Union said up to 200 truck drivers were affected. It said the workers were owed about HK$400,000 for the past four months. 'The two companies, Pine Logistics Co Ltd and China Moore Development Co Ltd are actually contractors providing logistic services to Modern Terminals, which has outsourced part of its operation to these two companies,' said So Pak-tsan, a spokesman for the union. 'These workers have been asked to sign a contract which states they are self-employed so their employers don't have to make contributions to their MPF accounts. 'These workers dare not report this to the authority, as they are worried that they will lose their jobs and not find jobs elsewhere.' Mr So said the two companies had been offering services to Modern Terminals as contractors for six to seven years. 'The companies have adopted this nasty practice since they have won contracts with Modern Terminals. We suspect that the two companies owe the workers millions in MPF contributions for they have been doing this for years.' A spokesman for the authority confirmed that it was concerned about the matter. 'We will take up the case and take follow-up action and conduct an investigation,' he said. 'We will collect information from the concerned companies to gain a better understanding of the case.' The companies could not be contacted for comment. Meanwhile, legislators passed a motion yesterday calling on the government to propose and carry out practical measures before the end of this legislative term to improve the enforcement of Labour Tribunal rulings. Union legislator Wong Kwok-hing, who proposed the motion, said employers such as Sing Pao Daily News always ignored the tribunal's rulings and workers had to endure a long wait before they could claim unpaid wages. Seven measures were being discussed by the Labour Advisory Board and one of the proposals was to make non-compliance of tribunal rulings a criminal offence. 'This problem has been going on for too long,' Mr Wong said at a Legco manpower panel meeting. 'The government should work out a timetable about when and what measures will be implemented in the face of irresponsible employers who leave workers unpaid, including their bonus and MPF contribution.' Secretary for Labour and Welfare Matthew Cheung Kin-chung said the government was determined to solve the problem. 'We have been troubled by this problem for nearly 40 years. But we need to have more discussions and study the feasibility of every proposed measure before making a decision.' Mr Cheung added that some proposed measures would have a huge impact on the legal system and careful consideration was needed.