Tired of boss' hard-sell fund drives
You need not advocate for your co-workers, but you should arrive at a strategy that works for you.
You needn't tell this supervisor that his efforts are inappropriate. What you can say is, "I'm sorry, but I can't contribute. I do my donating outside of work."
Do not offer specific explanations or excuses. (This will only inspire him to challenge you.) Be firm and friendly: "Gosh, I'm sorry, but that's the way it is."

Inside look at NUMC's aging infrastructure President and CEO of Nassau University Medical Center Thomas Stokes explains the problems caused by the aging infrastructure within the hospital. Newsday Associate Editor Joye Brown reports.