We examine the impact of unionization on firms' tax aggressiveness. We find a negative association between firms' tax aggressiveness and union power and a decrease in tax aggressiveness after labor union election wins. This relation is consistent with labor unions influencing managers' in one,...

This study uses a unique dataset that separates tax non-audit services (NAS) into tax planning and compliance NAS to examine how audit quality is affected by these two types of tax NAS. Our main results, which account for decisions to purchase and disclose the breakdown of tax NAS, show that...