This Labor Day is unlike any other we can remember in our lifetime. There is more labor to be done than there are willing workers. It seems there is a “help wanted” sign hanging on almost every other door or store window we pass. The biggest concern for local grape growers as the 2017 harvest begins is finding enough workers to pick their crops. With the official unemployment rate at 3.9 percent, this Labor Day in Sonoma County will be marked in stark contrast to recent Labor Days that were marred by a recession when the local unemployment rate hit a high of just over 11 percent.