In the wider 28-member euro zone, the rate also declined, to 9.1 percent from a revised 9.2 percent in October. That was the lowest rate since July 2009.
By contrast, conditions and the outlook for retailers were less rosy.
Euro zone retailers grew more gloomy in December, the Commission survey showed, for the second month in a row.
Eurostat data showed increased pessimism was for good reason as retail sales fell 0.3 percent month-on-month in November after a revised 0.2 percent decline in October and a 0.1 percent fall in September.
Economists polled by Reuters had expected a 0.2 percent monthly rise in sales, rather than a decline. In annual terms, retail sale in November were up 1.4 percent against expectations of a 2.0 percent gain.
Of the 14 euro zone members for which data was available, retail sales only went up month-on-month in Finland, Germany, Malta and Slovakia. The largest decreases were in Estonia, Latvia and Portugal.