Ventajas
There are some very nice people working here as well as some great products.
Desventajas
Teva is constantly restructuring with a ridiculous number of reorganizations that make people very nervous and that drives attrition. When the new CEO came on board, many top executives left, some by choice and some not. That was followed by a lot of job elimination for people based on areas of the world where salaries tend to be very high. Subsequent hiring has been in regions of the world where it is cheap to hire people. In some cases, Teva has laid off older, very experienced individuals in order to higher younger, less experienced and therefore less expensive people.
Teva is also willing to take the risk of doing things that are unethical in order to cut staff, hoping that they won't sue the company.
The increases in stock price isn't because the company is doing better, it's because they are trimming costs as much as possible.