Encouraging employer to set up paycheck-deducted charitable contributions

Hi, I'm new to the EA community and trying to figure how to make an impact quickly without too much career risk.

I currently work as an analyst at a top 10 US bank ($1t+ in assets, with over 50,000 employees.) 

So, I think one way I could make an impact would be to have a way for employees to have charitable contributions directly withdrawn from their paycheck. I'm not sure how this usually works, but given the size of my employer, I think the impact could be huge in terms of lives saved/improved. 

Has anyone successfully encouraged their employer to implement such a program?