Newsweek misspells OSHA

I haven't had much of a chance to check out the new and revised Newsweek. This week, though, they have an anti-EFCA piece by a small business owner, Kevin Kelly, and (at least in the online version) it mentions "OHSA" and the "Occupational Health and Safety Administration." Of course, the agency is actually OSHA, the Occupational Safety and Health Administration.

It also has an issue with an apostrophe:

We also know that some union contracts strictly limit the ability of managers to help run or setup machinery, something that would deeply hurt our company, where supervisor's often wield wrenches.

What's the deal?