The NFL and the NFL Referees Association engaged in substantial talks on Tuesday and Wednesday, according to Jay Glazer of FoxSports.com, but there has been no resolution involving their contract dispute.
The NFL has already assigned replacement refs for Week 3 games.
The regular referees have been locked out since June, and there has been considerable controversy about the ability of the replacement refs to handle the games adequately.
Salary, retirement benefits and operational issues are among the issues being negotiated.
NFL.com reported that benefits remain a major issue, and that not much progress was made in the talks this week.