Ice hockey officials, referee signals, and linesperson duties

Which rulebook does this explain?

This article uses the International Ice Hockey Federation Official Rule Book 2026/27. All rule references, signals and examples below refer to that edition, principally Rules 15, 31–32 and Appendix I.

It explains the division of responsibility between referees and linespersons. Do not assume every competition uses the same crew size, review facilities or reporting procedures: NHL, college, national-association and recreational games must follow their adopted codes and event regulations.

Who decides penalties and disputed goals?

IIHF Rules 31.2 and 31.4 give referees overall authority during play and stoppages. They assess penalties and decide disputed goals on the ice, with permission to consult linespersons. Rule 31.2 also places disputes about game time or penalty expiry with the referee.

A discussion between officials can therefore be part of reaching the ruling. One official may have seen the contact clearly while another had a better view of the puck. Consultation does not mean that each official has identical duties.

Under Rule 31.4, referees normally leave offside and icing decisions to linespersons. If an unforeseen problem prevents a linesperson from doing that job, a referee assumes those duties until play stops.

More than watching the blue line

IIHF Rules 32.2–32.3 assign linespersons offside, icing and every face-off except the opening draw of each regulation period. Rule 31.3 assigns those period-opening draws to a referee. A centre-ice draw after a goal is therefore not automatically a referee's draw.

Rule 32.5 also authorises stoppages for listed situations, including an unplayable or out-of-bounds puck, a serious injury missed by the referees, and a goal the referees did not observe. Offside and icing are only part of the job.

See face-off rules and violations, offside and tag-up and icing and hybrid icing for the underlying decisions.

Can a linesperson call a penalty?

The useful distinction in IIHF Rule 32.4 is between reporting an incident and assessing the penalty. Linespersons provide information; referees impose penalties. A linesperson does not simply act as another referee for every ordinary foul.

Rule 32.4 permits a linesperson to stop play and report specified incidents. Examples include too many players, an illegally supplied replacement stick, interference from the players' bench or penalty box, and a goalkeeper playing the puck outside the permitted area behind the net.

The same rule requires other reports after play ends, including incidents involving major penalties, misconducts, game misconducts, abuse of officials and dangerous actions. It separately requires an immediate stoppage for an unseen high-stick injury that calls for a double-minor penalty. These are different procedures, not a general power to whistle every missed foul.

Why one incident waits and another stops play

A missed major-penalty incident: a linesperson sees conduct that must be reported under IIHF Rule 32.4. The report follows completion of play; the seriousness of the suspected penalty alone does not supply an immediate whistle. A serious injury missed by the referees is a separate stopping ground under Rule 32.5.

An unseen high-stick injury: when the Rule 32.4 double-minor conditions are met, the linesperson stops play immediately and reports to the referees. This is why “linespersons can never stop play for a foul” is misleading.

A goal before the report: Rule 32.4 requires a goal to be disallowed when an attacking player committed one of its listed report-after-play infractions, unseen by the referees, before that team scored. The appropriate penalty is also assessed. This is a specific rule, not permission to cancel goals for any earlier complaint.

A raised arm does not always mean a penalty

Under IIHF Rule 15.1, a referee raises an arm for a delayed penalty against the team without puck control. Play stops when that team gains control. If the offending team already controls the puck, the referee stops play immediately.

Appendix I also uses an upright arm for a linesperson's delayed-offside signal and for the back linesperson's possible-icing signal. Identify the official and the play before deciding what the arm means.

For example, an arm raised while attackers are clearing the attacking zone can indicate delayed offside. An arm raised behind a long clearance can indicate possible icing. Neither, by itself, announces a trip or a two-minute penalty. Read penalties and delayed calls for the penalty sequence.

Common penalty signals

These descriptions summarise IIHF 2026/27 Appendix I. Use the gesture to identify the offence, then listen for the player and penalty announced. The gesture alone is not a complete explanation of the ruling.

The slashing, hooking and tripping explainer covers the conduct behind several of these signals.

Offside, icing and timeout signals

In IIHF Appendix I, delayed offside uses the non-whistle arm vertically overhead with an open hand. Lowering that arm cancels the delay. For offside called, the linesperson whistles, then points horizontally towards the blue line with the non-whistle hand.

For possible icing, the back linesperson holds an arm overhead while awaiting the front linesperson's decision. After icing is completed, the back linesperson indicates the face-off spot and, while returning towards it, crosses the arms across the chest. The initial raised arm is not itself the completed icing call.

A timeout is shown by forming a T with both hands in front of the chest. Eligibility to take the break is a separate question under Rule 87; see timeout rules.

What the whistle and discussion cannot tell you

Under IIHF Rule 31.2, a referee can determine that play stopped just before the whistle became audible. A puck crossing the line before the sound is therefore not, on that fact alone, proof of a valid goal.

Similarly, consulting another official does not automatically mean a video review. IIHF Rules 37–38 govern video review and coach's challenges separately from the consultation allowed by Rule 31.4. See video review and coach's challenge rules.

For practical viewing, follow four clues: the official involved, the event that prompted the whistle, the signal and the announcement. Together they explain much more than an isolated arm movement. Return to the ice hockey rules overview for related topics.

Sources and effective version

• IIHF Official Rule Book 2026/27: Rule 15.1 (delayed penalties); Rules 31.2–31.4 (referee authority and face-offs); Rules 32.2–32.5 (linesperson duties and reporting); Rules 37–38 (review); Appendix I (official signals).
• IIHF Rules, Regulations & Guidelines: official rulebook, situation handbook and officiating resources.

Checked on 20 September 2026 against the cited IIHF 2026/27 provisions. Use the edition and supplementary regulations adopted by the competition being played.