MLB lockout explained: what stops and what continues if players are locked out Dec. 1

A baseball lockout is a work stoppage started by the owners: they bar the players from team facilities and freeze major-league roster business until a new labor deal is signed. The current collective bargaining agreement expires at 11:59 p.m. ET on Dec. 1, 2026, per ESPN. If a lockout follows, trades and signings involving 40-man roster players stop, while minor league play and most offseason business below the 40-man level continue. As of Nov. 10, 2026, no lockout has been announced, and this explainer does not predict one.

Lockout vs. strike

In a strike, the players refuse to work. In a lockout, the employer shuts them out. That difference matters in practice: FanSided reports that MLB would not use replacement players during a lockout. That should not be read as a general legal bar: the National Labor Relations Board lists hiring temporary replacements during a lawful lockout as permissible conduct. The last strike, which began Aug. 12, 1994, wiped out the rest of that season and the World Series, per Sportico.

An expiring agreement does not stop anything by itself. In 2021, the owners voted unanimously to lock the players out after the agreement expired at 11:59 p.m. ET on Dec. 1, and the lockout took effect at 12:01 a.m. ET on Dec. 2, per CNN. ESPN’s reporters wrote last December that a lockout on Dec. 1, 2026 would shut down free agency and trades as it did in 2021, and that early to mid-March would then become the informal deadline for losing regular-season games. For background on what is being negotiated, see our coverage of the salary cap proposal.

What stops

The 2021-22 lockout set the template. These items froze:

• Transactions. Teams could not make any transactions involving 40-man roster players, per Baseball America. That meant no trades and no free-agent signings. Sportico reported nearly 200 free agents were unsigned when the lockout began.
• Contact and facilities. Players and team employees could not communicate, and injured players could not rehab at team facilities or with team trainers, per Baseball America. MLB.com removed images of 40-man players from its website.
• The Winter Meetings. The major league portion of the Orlando meetings, set to start Monday, Dec. 6, 2021, was canceled, per Sportico. The major league portion of the Dec. 9 Rule 5 draft was also dropped, per Baseball America.
• Base salary. Major league players normally receive base salaries during the playing season, not throughout the offseason, so a lockout that stretches into scheduled games could interrupt salary payments. Deferred compensation and contractually scheduled bonuses may still be payable, per FanSided’s 2026 explainer.

FanSided reported in October that the league sent teams a 34-page lockout memo after this season ended, citing The Athletic. FanSided said the memo’s limits include international players who are posted before a lockout.

What continues

• Minor league baseball. Players not on 40-man rosters, which includes most minor leaguers, could still sign minor league free-agent deals or be traded, per Baseball America. The minor league portions of the Winter Meetings and the Rule 5 draft went ahead. Sportico said the minor league portion of the meetings was held in Atlanta.
• Play elsewhere. Locked-out players can play in other professional leagues, such as those in Japan or Latin America, per FanSided.
• Merchandise and union services. Teams can still sell merchandise with player names and images, and players can still go to the union for help with finances and health insurance, per FanSided.
• The minor league calendar. Minor league teams have their own labor agreement, and FanSided said next season is expected to start on time.

How the 2021-22 lockout played out

The lockout lasted 99 days, from Dec. 2, 2021, to March 10, 2022, when owners ratified a new agreement, per MLB Trade Rumors. By our arithmetic, counting Dec. 2 as day one, that is 30 days in December, 31 in January, 28 in February and 10 in March.

The sides missed MLB’s own deadlines. On March 1, which was day 90 by our count, Commissioner Rob Manfred announced the cancellation of the first two regular-season series, the first games lost to a work stoppage since 1994-95, per CBS Sports. The deal nine days later changed that: Opening Day moved from March 31 to April 7, and CBS Sports reported a full 162-game schedule would be played. By our arithmetic, the deal came 21 days before the original Opening Day and 28 days before the actual one.

MLB Trade Rumors described a 28-day stretch of free agency and trades between the deal and Opening Day. The 2021-22 lockout is the only recent precedent, and the length and effects of any 2026-27 lockout would depend on the talks.

Caveats

We could not open MLB.com or AP pages on the expiration time, so we rely on ESPN for the 11:59 p.m. ET figure. Sources differ on when pitchers and catchers were due to report in 2022 (Feb. 14 per Baseball America, Feb. 15 per Sportico), so we leave that date out. The 2026 league memo is not public, so we could not confirm how a new lockout would treat pay, drug testing or other details.