Currently, 24 states have RTW laws. Of these, 12 states passed RTW laws prior to 1950 and another six passed them prior to 1960. The two most recent states to adopt RTW laws are Indiana and Michigan, both of which enacted legislation in 2012. Several other state legislatures are debating RTW laws.
Recent legislative proposals, with substantial numbers of cosponsors, would expand RTW policies nationwide. Advocates of national RTW laws claim that they would enhance personal freedom and employer flexibility. Opponents argue that such laws would weaken workers’ abilities to collectively bargain for more favorable compensation and working conditions. Proposals aiming to expand RTW policies typically strike the provisions of the NLRA that permit union security agreements.
National RTW proposals are often discussed in the context of the economic performance of states that have adopted them. However, research that compares outcomes in RTW and union security states is inconclusive. The recent data trends between RTW and union security states are relatively distinct, but, since it is difficult to determine the effect of a single variable on broader economic outcomes, the influence of RTW laws in these trends (if any) is unclear.
• Unionization rates in RTW states are less than half of what they are in union security states. It is ambiguous what portion of this difference is attributable to RTW laws, what portion is due to diverse preferences among states’ populations regarding unionization, and what portion is due to other factors.
• In the past decade, aggregate employment in RTW states has increased modestly while employment in union security states has declined. It is unclear if this growth is attributable to RTW, other pro-business policies (which tend to be concentrated in RTW states), or other factors.
• Wages are lower in RTW states than union security states. Historical research has suggested that RTW laws have little influence on these differences. More contemporary scholarship has come to diverse conclusions, depending on the researchers’ methodology….
Difficulties associated with rigorously studying the relationships between RTW laws and various outcomes are likely to continue to make it difficult to generate definitive findings about these relationships. As such, the ongoing debate on RTW may be driven by factors other than rigorous empirical evidence.