Lawyers threaten Queensland Government over WorkCover crackdown LAWYERS furious about proposed changes to the state's workers compensation scheme have vowed to cruel the re-election chances of Government MPs. Several MPs say they have received letters from lawyer constituents warning they would actively campaign to ensure they were not re-elected if they did not take a stand against the WorkCover amendments. The changes include a cap on common-law claims and tougher penalties for those who lodge fraudulent compensation claims. The rules will likely cost the legal fraternity millions, according to one prominent firm. The laws are set to be passed by State Parliament today. The Courier- Mail has obtained a letter sent to one MP by a lawyer and constituent which stated: "If these anticipated changes are brought in, I will do my very best to ensure that your career ... is a short one. Another MP said they received a letter which stated: "This has been a disgraceful, underhand course of conduct. I will do my very best to ensure that at the next election you are not re-elected. Businesses have welcomed the WorkCover changes, which include a 5 per cent injury threshold for common law claims and tougher penalties for those caught out lodging fraudulent claims, predicting they will lead to smaller premiums. Unions and lawyers, however, say imposing the threshold will disadvantage thousands of Queensland workers who will no longer be able to pursue negligent employers through the courts. High-profile law firm Shine told the Australian Stock Exchange on Tuesday the changes could cost it up to $2.5 million in lost profit. Shine managing director Simon Morrison said the changes would be felt in the 2014-15 financial year. But he said the company would adapt.