True, but now they are employed by companies that make money off of and pay their salaries with the profits earned from the sale of medicine they object to. That's like being a security guard at an abortion clinic. They may not perform the abortions but they are profiting from it. Wouldn't it make more sense to quit rather than accept a salary from a company who practices what you condemn?
If we had a free market and business owners had the choice so a health care employee had a choice, it would make sense. But when governments force this choice on all businesses, it gets to the point where pro-lifers can't work in the profession. Is that what you want?