A construction worker who suffered violent and lewd outbursts after a plank fell on his head in a workplace accident was yesterday awarded $8.43 million. Wong Sin-lam, 42, is now forced to take a cocktail of drugs to control the outbreaks which made him behave like a 'egocentric, obstinate and selfish child', the Court of First Instance heard. His behaviour changed after an accident on March 8, 1998, which left him with a fractured skull and spine. The court heard Mr Wong was struck on the head by a large plank after it slipped its fastenings at a Tseung Kwan O site. Mr Wong's employers, Kuen Fong Construction, principal contractor Heng Tat Construction, and former sub-contractor Wai Keung Construction Engineering, admitted liability. Mr Justice William Stone heard the force of the blow dented Mr Wong's safety helmet. It was during his recovery from neurosurgery in the Prince of Wales Hospital that Mr Wong began to display violent and vulgar behaviour, including attacks on his wife and hospital staff. Mr Wong was only discharged on May 18 last year. Up until that time, he had been shuttled between psychiatric facilities. Mr Justice Stone noted Mr Wong was able to live at his home due to the 'devoted care' of his wife, as well as a 'cocktail of daily drug therapy' which controlled his behaviour. The judge awarded him $1 million for loss and suffering. Mr Wong was also awarded $6.06 million for loss of earnings. The remaining damages covered such categories as medical expenses.