I had always heard the default to be "a month per year of service," so paying nothing to people who hadn't started is definitely crappy for the people who had p

I had always heard the default to be "a month per year of service," so paying nothing to people who hadn't started is definitely crappy for the people who had probably put in notice elsewhere (who are now, for unemployment insurance purposes, considered to have voluntarily quit their last job), but it doesn't really surprise me.