Years before skyscrapers, when New York City’s tallest building was still the 281-foot spire of Wall Street’s historic Trinity Church, state lawmakers passed the Scaffold Law, which made property owners and contractors liable for most “gravity-related” injuries to workers on construction sites. … Some New York government agencies and contractors say the cost of the insurance, which can often be double that of other states, is hitting a crisis point that could soon suspend work on bridges, schools and the recovery from Superstorm Sandy.“It increases the cost of doing business and decreases what we are capable of doing in New...