In addition to billions in budget cuts and nearly 4,000 layoffs at city agencies, Mayor Bloomberg's budget plan unveiled today includes $1.4 billion in savings and new revenue that will depend largely on Albany. Bloomberg will need state lawmakers to allow him to expand the city's sales tax. He'll also need new legislation that would allow the city to give new public employees a smaller pension than current or retired ones a task Bloomberg's not sure Albany is up to. Public employee unions are strongly opposed to the plan, which could save the city billions in the long-term. Meanwhile, City Council Speaker Christine Quinn says she's opposed to the sales tax hike, calling it "regressive." Most of the savings in the mayor's budget plan, $3.4 billion, would come from cost cutting at city agencies. Over 3,700 employees will be laid off, though teachers, police and firefighters will be exempt.