TheESPN obtained a copy of the email that says they are mandating COVID-19 booster shot for all minor league player.
The White Sox were the first minor league team to require vaccinations. Major League Baseball advised teams in late January that vaccines would not become mandatory for minor-league players but would for coaches, managers and other staff who are regularly in contact with the players.
In a letter to the players, the White Sox stated that players need to provide proof of having received the COVID booster vaccination and that they must also show proof of their vaccination before reporting to Spring Training. If you don't have this proof, you will be denied the opportunity to participate in the game. The White Sox expects players to report to spring training on Feb. 21. Sources say that the White Sox had 100% compliance when they mandated vaccines for minor-league players last spring.
Organizations can unilaterally implement rules like a mandate for vaccines because minor league players do not have a union. A mandate is not applicable to major league players who are on 40-man rosters. This would require collective bargaining.
According to The Athletic, the White Sox will not release minor leaguers who refuse vaccine. ESPN sources have confirmed that several minor leaguers in the White Sox are not currently vaccinated. Other minor leaguers have not received the COVID boosters required by the team.
The team released a statement saying that the Chicago White Sox require all employees to have their COVID-19 vaccine status up-to-date. This requirement also applies to minor-league players. We believe that this is the best thing to do in order to protect the health of all players and staff.