One exception is if your BA/BS graduation happens during an economic or industry downturn, so that trying to enter the labor force means being unemployed, and possibly unemployable later since long term unemployed people tend to be last hired during a recovery (employers assume that since no one else hired you, you are not worth hiring, or that your skills have decayed). If you have an offer of funded graduate study, it may be worth waiting out the downturn doing graduate study instead of becoming part of the unemployment statistics.