If underlined there is a link to the OSA policy site.
The Ontario Soccer Association changed its referee classifications in 2009.

CSA / OSA Referee Classification System

• Mini Referees (12 and 13 Years old)
• Youth Referees (14 and 15 Years old)
• District Referees (over 16 Years old)
• Regional Referee
• Provincial Referee

Clubs will host mini and entry level courses while the OSA will host Regional and Provincial
upgrading courses for referees according to the OSA policies.

CSA / OSA UNIFORM POLICY

All Match Official must wear plain black shirts, black shorts and black socks.

• The referees are to be a different colour of uniform then both of the participating teams and the goaltenders are to be a different colour than the referees (Law 4).
• When there is a clash between the uniform shirt colours between the players and the referees, the first alternative colour for the referees are yellow and then red.
• All Referees are to wear the CSA Badge only and which must be worn on the left breast pocket.
• No other competition or association badge may be worn
• No Advertising of any nature is permitted on Match Official's Clothing, except for marked logos (branding).
• Officials must wear the UMBRO uniform if they are doing semi-final Ontario Cup games.

POLICY REGARDING LIGHTNING / SEVERE WEATHER

Safety of the players, officials and the fans is a primary responsibility of the game officials. Go to the CSA website to be up-to-date with the current policy.

POLICY REGARDING THE WEARING OF CASTS

Again safety of the players is paramount. Go to the CSA website to be up-to-date with the current policy.
OSA POLICY on the PROPER FOOTWEAR, CASTS, ORTHOPEDIC DEVICES, JEWELLRY, HEADWARE, EYEGLASSES, ETC
"A player must not use equipment or wear anything that is dangerous to himself or another player" (Law 4).

Introduction: The Canadian Soccer Association issued a memorandum (2005) pertaining to Law 4, Players Equipment, which clarifies the use of non-essential equipment that may or may not be worn by players. This document elaborates on the CSA document for games under the jurisdiction of the Ontario Soccer Association.

For games played outside of the OSA Rules and Regulations (e.g. A League, PDL, W League, Super Y) please consult the appropriate referee manual.

JEWELLERY: No item of jewellery of any sort will be allowed on the field of play, even if it is 'taped'. This includes but not limited to necklaces, rings, bracelets, earrings, leather or rubber bands or visible body piercings. Loose beaded hair is also not permitted unless tied back or covered by a net.

Exceptions to this interpretation are:

• Smooth wedding bands, which, when the referee is convinced cannot be removed may be taped.
• Medic Alert Bracelets are allowed but must be taped. The taping should be such that the description of the medical problem is clearly visible.
  
• HEADWEAR
• Hats - No hats are allowed on the field of play.

Exceptions to this interpretation are:

• The goalkeeper may wear a hat, or
• A player may be permitted for medical reasons on the presentation of a letter signed by a medical professional and validated by the District Association and a copy to the OSA.
• As guidance -
• a. the hat may not be a baseball cap, and
• b. If cap has a peak it must face forwards and have a soft peak. and
• c. contains no metal or plastic parts
• Bandanas - no bandanas are allowed.
• Sweat bands - no sweatbands are allowed.
• Head protectors: only those permitted by FIFA are allowed.
• Eyeglasses: are allowed if they are sports spectacles and are safe for the players themselves and for other players. Materials such as metal or glass are not acceptable. In recreational and house league games referees are expected to show common sense and allow spectacles as long as the basic principals of Law 4 are met.
  

ORTHOPEDIC SUPPORTS, E.G. KNEE BRACES FIFA circular 863 states that the vast majority of commercially manufactured supports are safe to use. -the major concern is not the 'hardness' of the equipment alone, rather that any part of it can cut or wound another player. - any support must be safe for all players, and adequately padded and covered if necessary.

CASTS: Players wearing a soft cast will be permitted to play if the cast does not present a danger to him/herself or any other player. - All casts must be adequately padded by suitable material such as foam or "bubble wrap".

PROSTHETICS: A player wearing a prosthetic device should be allowed to play providing the basic principals of Law 4 are met.

FOOTWEAR: Referees are encouraged to incorporate a footwear inspection in the pre-match safety check of players' equipment. - Poorly maintained studs or blades on the sole of the boot can constitute a danger. - When inspecting footwear, referees are to be alert to the possibility of the edge of the blades or studs developing rough areas on either the plastic or metal used in their construction. -These burrs can become very sharp and have been the cause of lacerations to opponents. A referee who is concerned over the condition of blades or studs should refuse their use until such time as the unsafe condition has been removed.

JERSEYS: All jerseys must have sleeves. The players may not roll the sleeves up or tie them at the shoulder level.

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