Danbury State Senator Julie Kushner joined with a bargaining committee of janitors yesterday as they started negotiations on a new union contract.  The union represents nearly 3,000 men and women who clean and maintain buildings in Fairfield County and in the Hudson Valley in New York.  The workers who clean 228 properties – almost 90% of the large office buildings in the region are fighting for a wage increase and protection of their employer-supported benefits.  An SEIU official says at a time when many of the corporations they clean have enjoyed massive tax breaks and record profits, these workers need a sensible wage increase.  The negotiations are happened with a consortium of contractors and building owners.