From reading the Anadarko questions and answers section filed with the SEC it looks like things are up in the air about as much as they could be. Also, the letter in the same filings from the OXY CEO seem to be the same. Based on what the Oxy CEO is saying in the letter there should be some job offers to work for the combined company.
On paper the combined company should be a lot stronger and just need to work down the debt and get the stock to increase. In many instances the buying company will take the opportunity to dismiss low performers and pick the best talent from both places. It might be way out there, but I think this is an opportunity to mesh the best from both companies to come out to be a stronger company as a whole. Maybe just wishful thinking.