Berkshire Hathaway Inc has been sued by a New York bicycle courier company over an alleged illegal scheme to cheat employers buying workers' compensation policies. The complaint, filed late Friday by Breakaway Courier Systems, came as Berkshire's Applied Underwriters unit faces scrutiny over its workers' compensation policies, including some that have been banned by California, Vermont and Wisconsin. Breakaway, with about 300 employees, accused Berkshire and Applied of "siphoning" premiums through a web of illegal shell companies, with diverted premiums going to unlicensed out-of-state insurers. The plan amounted to a "reverse Ponzi scheme" where unsuspecting employers expecting to buy affordable...