All penalties awarded in the Premier League are automatically checked by the Video Assistant Referee (VAR), who will also check for possible penalties not awarded by the on-field referee.
For penalties awarded the VAR will check for any infringements by the attacking team in the attacking possession phase (APP) that led to the penalty as well as the incident for which the penalty was awarded.
For factual decisions such as offside or the ball being out of play in the APP, the VAR will inform the referee, who will overturn any penalty awarded.
For subjective penalty decisions, such as for a foul or for a handball, the referee will confirm their decision to the VAR and what they have seen - "Referee's Call".
The VAR will look to identify through evidence readily available if there was a “clear and obvious error”.
If the evidence readily available to the VAR from the broadcast footage shows that the referee's on-field call is a clearly and obviously wrong, the VAR can recommend the on-field referee goes to the pitchside monitor to review.
The final decision will remain with the on-field referee.
If a penalty decision is overturned with no infringement by the attacking team, play will restart with an uncontested drop ball for the defending team.
See also
VAR: Overview
VAR: Goals
VAR: Direct red card incidents
VAR: Mistaken identity