In some cases you&#x27;re required to pay union dues regardless of whether you join or not. This is apparently the case for teacher&#x27;s unions in 22 states + DC.[1] So &quot;don&#x27;t do business with them&quot; isn&#x27;t even always an option.<p>[1] <a href="http:&#x2F;&#x2F;www.teachersunionexposed.com&#x2F;teachers.php" rel="nofollow">http:&#x2F;&#x2F;www.teachersunionexposed.com&#x2F;teachers.php</a>