If you haven't seen this yet, a new update on the home page of Weatherford's intranet details how the company's stock will no longer be available for purchase within the 401(k) plan beginning Jan 1, 2016. If you own stock, you will have two years to move the stock balance to another fund or it will be moved for you at the end of the two years.
What is interesting is that when I looked online for reasons why companies might make a move like this, some of the reasons listed were to reduce the company's liability, make itself less susceptible to class action lawsuit from stock owners (employees included), bankruptcy, selling to another company.
I haven't seen any stories online about any of those reasons associated with Weatherford specifically other than general rumors, but this is one more thing that the company is doing that makes you wonder what's going on behind the scenes.