Tipping out bus boys and bartenders in New York

(NY) I have been told by the restaurant I work at that I am required to tip out the bus boys and bartender at the end of my shift. Is this legal? I have never been required to do this before.

U.S. Federal law allows the employer to require directly-tipped employees contribute to a tip pool...

U.S. Department of Labor
Employment Standards Administration
Wage and Hour Division
(Revised July 2008)
Fact Sheet #15: Tipped Employees Under the Fair Labor Standards Act (FLSA)

http://www.dol.gov/esa/whd/regs/compliance/whdfs15.pdf

Both are the bartender and the busboys are contributing to your performance. Why would you think you should keep all the money made and not tip them out?
It's a pretty standard practice.

The bus boys generally makes twice the amount in Salary than a waiter. Generally speaking, if You should not tip out more than 3% of your food sales to the bussers.