Pregnancy: does tasting & spitting wine count as drinking?

Do you think it counts as drinking alcohol if you take a sip of wine when pregnant but spit it out? I'm from Napa and there are a lot of people in the wine industry. Being a winemaker, for example, often means having to taste wine at various points in the process. It's pretty standard to spit it out, though. Drinking on the job is not really acceptable. If a woman working as a winemaker got pregnant, do you think doing her job would count as "drinking" during her pregnancy? 

If you vote "yes," do you think a pregnant winemaker should quit her job?