It surely is better than them not buying company stock. I think it is great to hear the employees are buying, they have a good feel for what is happening. Much better than we do behind the keyboards. Sure sounds Chemtura is on the road to recovery to me. Just a matter of time for them to be back on the Big Board.
Don't completely agree with your post. When an employee has their wages and their retirement tied up in one company, it's usually not wise. See Ken Lay and Enron or AKA spread the risk. If they see a far healthier firm from the inside than the firm in Chapter 11 that most see, it might be a very wise investment. If they're buying CEMJQ because they see strength and an enormous financial opportunity with minimal exposure, it might be a very significant phenomenon. An insiders view to the companies health is significant IMO.
If I'm working for a powerhouse co. like cemjq that was trading $8-$10 and it stumbles with the economic disaster (engineered by our government) I did not lose my job or benefits I see business slow over night then see it picking back up and I can buy the shares that were $8-$10 for .12 I can assure I would be loading them up