How added time is worked out, and why it grew

What the law requires

The referee must allow for time lost through substitutions, injuries, disciplinary sanctions, goal celebrations and any other cause of delay. The allowance rests on the referee's discretion rather than on a mechanical total, and the law does not require a running clock of stoppages to be kept. The figure shown by the fourth official is a minimum, which is why play regularly continues well past the announced point.

That minimum framing exists so a stoppage occurring within added time can itself be added without any second announcement being needed. The referee alone decides when the period ends, and the display carries no authority of its own.

Why the figure has increased

Competitions have pushed referees to account for lost time more completely, particularly around goal celebrations and lengthy substitution sequences. The change is one of accounting rather than of law, since exactly the same causes of delay were always meant to be included. The result is longer added periods without any corresponding increase in the amount of time the ball is actually in play.

That distinction matters, because the stated aim was to increase playing time rather than simply to increase elapsed time. Whether the accounting change achieves the aim depends on whether teams adjust their own behaviour once the time is reliably recovered.

The incentive problem it addresses

A team ahead late in a match has an incentive to slow every restart, and each individual delay is far too small to punish on its own. Accumulated across a closing period, those delays remove a meaningful share of the playing time that remains. Recovering the time removes the benefit, and that is the deterrent the provision relies on rather than any disciplinary sanction.

Cautions for time-wasting exist but are used sparingly, because they escalate a question of match management into a disciplinary one. The recovery approach is therefore preferred as the lower-friction instrument of the two, because it changes the arithmetic of delaying without adding another contested decision to the referee's workload.

What a stopped clock would change

Some sports stop the clock at every dead ball, which removes discretion entirely and makes the time remaining unambiguous to everyone watching. Football has resisted this partly because a running clock is central to how the closing phase of a match feels to players and spectators alike. A stopped clock would also lengthen matches in elapsed terms unless the nominal period were shortened to compensate for it.

Trials of shorter periods with a stopped clock have been discussed at various levels without being adopted in senior competition. The trade-off is between precision and the character of the game's final phase, and it has consistently been resolved in favour of the latter.

How it changes the closing minutes

A long announced period changes tactical behaviour immediately, since a trailing side now knows how much genuine opportunity is left to it. Coaches adjust substitutions accordingly, holding an attacking change until the added period rather than spending it earlier in the half. The defending side faces a longer window in which to sustain concentration, and that is where late goals disproportionately originate.

Physical demands rise as well, and the cumulative effect across a congested schedule is one of the arguments raised against the change. None of it required a new law, only a different reading of a discretion that had always existed.