Every year it's worth noting that a number of the original and adapted screenplays in the hunt for Oscar consideration won't get the extra bump of a nomination from the Writers Guild of America (WGA). Reasons for failing to qualify include the writer of the script not being a guild member or not retroactively handling the requisite process, among other things.
After taking a look at the official WGA ballot this season, I count 15 scripts from our screenplay Contenders pages that will not be eligible for consideration. Many of them seem out of the Oscar hunt for the most part and the number of notable exclusions is smaller than normal.
In the original screenplay category, as always, Quentin Tarantino will not be competing for his work on "Django Unchained." He has never been a member of the guild, but of course, that didn't stop his scripts for "Pulp Fiction" and "Inglorious Basterds" to go on to Oscar recognition. (Tarantino was similarly not a member of the DGA until this year, but he received two nominations prior nominations from that group, nevertheless.)