If there's anyone cleaning up on Wall Street these days, it's the NYPD.
Police overtime costs have soared to at least $3.4 million in response to the ongoing Occupy Wall Street demonstrations that began last month, city officials said Tuesday, and findings released Tuesday by the nonpartisan Independent Budget Office show police have been earning even more for working extra hours.
In fiscal 2011, which ended in June, police overtime hit $549.5 million -- surging from $412 million in 2006, the budget office said.
"It's likely that we'll see substantial overtime costs for Occupy Wall Street and other goings-on around town for some time," the IBO warned.
While events requiring police overtime don't typically last as long as the Occupy Wall Street movement, they all add up. Even welcomed events, such as a Yankees-Red Sox game, have resulted in significant NYPD costs, IBO data show.
Here's a look at some of the more costly events:
Occupy Wall Street
The first 30 days of the movement, which started Sept. 17, has turned into the most costly event in the city in recent years.
The one-day annual event involved more than 45,000 athletes last year racing through all five boroughs.
The post-Christmas blizzard last year crippled the city for days, with police responding to stranded commuters and ensuring safe conditions.
Yankees vs. Red Sox
The Yanks' success also led to overtime. The team's rivalry with Boston -- seven games in August and September -- required extra police presence at Yankee Stadium.
About 3 million people line the streets to watch the holiday tradition, setting up camp from early morning to about noon.
Source: Independent Budget Office