More information from O*NET OnLine:

Umpires, Referees, and Other Sports Officials - 27-2023.00

O*NET-SOC Description

Officiate at competitive athletic or sporting events. Detect infractions of rules and decide penalties according to established regulations. Includes all sporting officials, referees, and competition judges.

Sample of Reported Job Titles

Basketball Referee
Diving Judge
Dressage Judge
Football Referee
Horse Show Judge

Major League Baseball Umpire (MLB Umpire)
Referee
Soccer Referee
Softball Umpire
Sports Official

SOC Occupation Groups

27-0000	Arts, Design, Entertainment, Sports, and Media Occupations
27-2000	Entertainers and Performers, Sports and Related Workers
27-2020	Athletes, Coaches, Umpires, and Related Workers
27-2023.00	Umpires, Referees, and Other Sports Officials

Related Occupations

13-1041.00	Compliance Officers
25-3021.00	Self-Enrichment Teachers
27-2021.00	Athletes and Sports Competitors Bright Outlook
27-2022.00	Coaches and Scouts
33-1012.00	First-Line Supervisors of Police and Detectives
33-3011.00	Bailiffs
39-1014.00	First-Line Supervisors of Entertainment and Recreation Workers, Except Gambling Services
39-2011.00	Animal Trainers
39-3091.00	Amusement and Recreation Attendants
39-9031.00	Exercise Trainers and Group Fitness Instructors

Tasks

Compile scores and other athletic records.
Confer with other sporting officials, coaches, players, and facility managers to provide information, coordinate activities, and discuss problems.
Direct participants to assigned areas, such as starting blocks or penalty areas.
Inspect game sites for compliance with regulations or safety requirements.
Inspect sporting equipment or examine participants to ensure compliance with event and safety regulations.
Judge performances in sporting competitions to award points, impose scoring penalties, and determine results.
Keep track of event times, including race times and elapsed time during game segments, starting or stopping play when necessary.
Officiate at sporting events, games, or competitions, to maintain standards of play and to ensure that game rules are observed.
Report to regulating organizations regarding sporting activities, complaints made, and actions taken or needed, such as fines or other disciplinary actions.
Research and study players and teams to anticipate issues that might arise in future engagements.
Resolve claims of rule infractions or complaints by participants and assess any necessary penalties, according to regulations.
Signal participants or other officials to make them aware of infractions or to otherwise regulate play or competition.
Start races and competitions.
Teach and explain the rules and regulations governing a specific sport.
Verify credentials of participants in sporting events, and make other qualifying determinations, such as starting order or handicap number.
Verify scoring calculations before competition winners are announced.