Why are some corporations against the Free Health Care proposal?

There is no such thing as free. Someone will pay for it. You can say the big, evil corps will pay, but this will still come from people.
As a big evil CEO, who makes a solid 300 bucks a week, I am still against it. I offer health insurance to 18 employees, pay for 75% of the premium if they choose to except it.
What new regulations will do, is people like me, who have been expanding during a down economy (I, not the President, have created 10 jobs in the last year, and received zero government money) will stop expanding. The limits that have been tossed around are about where I am at employee and payroll wise. So no more expansion, no more new jobs.
The effective tax rate on the self employed over 100k is well over 50%, and this does not include taxes for sales, import, ect. At what point is enough enough?
If you really want “free” health care, make everyone, including the poor, children, immigrants (illegal or otherwise, people are people) pay for the cost. Just divide it up and send everyone a bill. You do not pay, you do not get to use it. Period. Too large a % of the population pays little or nothing for everything they get, and it would be interesting to see the reaction if the takers actually have to pay for something.
Finally, if an employee leaves, they leave. Over the years, several of our managers have taken what we do and started out on there own. That is just business. I have supervised well over 200 employees, and have never said, or even thought about health insurance as a carrot/stick in getting someone to do there job. Everyone, even myself is replacable.