When all is said and done, President Joe Biden may end up like America’s 36th president, Lyndon B. Johnson. Both boasted strong domestic and controversial foreign policies and chose not to run for a second term. Most famously, their legacies were complicated by successors who undid much of their work. This could spell trouble for labor unions, which benefited from one of the most pro-labor Presidents in history.

• Biden’s pro-labor policies helped unions secure generational pay increases — union elections spiked to decade-highs, and workers across America organized for higher wages.
• On the other hand, Trump is a vocal union opponent and is expected to reverse many of Biden’s pro-labor policies, including rulings by the National Labor Relations Board and enforcement on worker safety and overtime pay.

What does that mean? If Trump’s approach mirrors his first term, reversing Biden’s successes could make him appear extremely pro-business at the expense of employees and the working-class people who lined up to vote for him. These workers stand to lose expanded overtime pay, see weaker safety and employment violations enforcement, and face fewer protections around non-compete and non-disclosure agreements. For unions, those compound fractures could threaten the momentum they’ve spent years drumming up.