I currently donate most of my money to charity, and knowing this my company has offered that they could deduce my salary and instead pay that money directly to charity.
I posted a question to the finances board asking rather this would be a net gain to charity, and almost immediately someone suggested that this may constitute tax evasion and be illegal. I wouldn't think my company would screw up by accidentally offering to do something that was illegal.
So would allowing my company to donate money to a charity I choose in lieu of a salary increase be legal for me and my company.