According to it, a total of 16 women who worked for the company have filed complaints for receiving checks with no signature. The whole investigation, including video materials, can be found here. Now, the company's management did not appear to let people see their point of view, which is important in such situations. Yet, as more and more people get interested in the company's stock, they would no doubt do research on the company and find issues like the above.
The truth of the matter is that most shareholders do not care at all about whether the company has paid or not paid to its employees, what they care about is how their investment is doing. The thing is that if this is really a regular practice of Baristas (not paying employees), why would anyone expect that it would work for the well-being of the stockholders? Just one of the many interesting questions that come along when projections are made about the company future.