Glossary of Terms

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This list includes some of the abbreviations you might hear mentioned in the workers’ compensation system, and may see written in Workplace Safety and Insurance Board (WSIB) case files. As the substantive provisions of legislation pertaining to a particular case depend on the date of injury or disease, this list includes terminology associated with any of the four Acts that may continue to apply to a workers’ compensation claim:

  • The Workplace Safety and Insurance Act, 1997 (covering accidents and diseases that occurred on or after January 1, 1998)
  • the pre-1997 Workers’ Compensation Act (covering accidents and diseases that occurred between January 2, 1990 and December 31, 1997)
  • the pre-1989 Workers’ Compensation Act (covering accidents and diseases that occurred between April 1, 1985 and January 1, 1990, as well as deaths during this same period regardless of the date of the accident) and
  • the pre-1985 Workers’ Compensation Act (covering accidents and diseases that occurred prior to April 1, 1985).


Term Description
AA Appeals Adjudicator
AB Appeals Branch (WSIB)
AD accident date
ADJ adjustment
ADL activities of daily living
AE accident employer (now injury employer)
AO Area Office, i.e., Ottawa Area Office
ARO Appeals Resolution Officer (Appeals Branch, WSIB)
CAD-7 Council Amendment to Draft #7 (experience rating program for the construction industry)
CAT scan computerized axial tomography scan
CC clearance certificate
CCU Complex Claims Unit; Diseases / Injuries
CCU-D Complex Claims Unit; Diseases / Injuries
CCU-I Complex Claims Unit; Diseases / Injuries
CD case description
CL closed file or claim status
CLT claimant
CM Case Manager, Short Term OR Long Term (formerly Claims Adjudicator)
CNS central nervous system
C/O complain(s) / (ed) / (ing) of
COLD Chronic Obstructive Lung Disease
COMP compensation
COPD Chronic Obstructive Pulmonary Disease
CPD Chronic Pain Disability
CPI Consumer Price Index
CR case record
CSA Canadian Standards Association
CT scan computerized axial tomography scan
CU classification unit
DOA date of accident
DSM Diagnostic and Statistical Manual of Mental Disorders
DSM-III-R Diagnostic and Statistical Manual of Mental Disorders (3rd ed., revised)
Dx diagnosis
ECM Employer Classification Manual (WSIB)
EEG electroencephalogram
EFD evidence of financial dependency
EMG electromyogram
ENT entitlement
ERF employer registration form
ESL English as a Second Language
ESRTW early and safe return to work
EXT extend
FA functional abilities
FAE functional abilities evaluation
FA form Functional Abilities Form
FIRM Field Investigation Referral Memo (Form 630)
Form 6 Worker’s Report of Injury/Disease Form 6
Form 7 Employer’s Report of Injury/Disease Form 7
Form 8 Health Professional’s Report
Form 26 Health Professional’s Progress Report
Form 41A Worker’s Progress Report
FPC Fair Practices Commission
FU follow up
HAVS Hand Arm Vibration Syndrome
HIV Human Immunodeficiency Virus
HO Hearings Officer
HSA Health and Safety Association
Hx history
ICD-9 International Classification of Diseases (9th rev.)
IE injured employee
INT interest
IO independent operator
IW injured worker
IWH Institute for Work & Health
JST Job Search Training Program
L left
LDW last day worked
LFW looking for work
LMI labour market information
LMR labour market re-entry (now work transition)
LMRA labour market re-entry assessment
LMRP labour market re-entry plan
LO layoff/laid off
LOE loss of earnings benefit
LRI loss of retirement income benefit
LT lost time
LW light work
MA medical aid
MAP Merit Adjusted Premium Program (experience rating program)
MC Medical Consultant
MMR maximum medical recovery / rehabilitation
MR medical rehabilitation
MSD musculoskeletal disorder
MTC medical treatment control
MTCU Ministry of Training, Colleges and Universities
MVA motor vehicle accident
NAE net average earnings
NC Nurse Consultant (formerly Nurse Case Manager)
NEC net exemption code
NEER New Experimental Experience Rating Plan
NEL non-economic loss benefit
NFA no further action on claim
NIHL Noise-Induced Hearing Loss
NLT no lost time claim
NOC National Occupational Classification
Non-comp non-compensable injury / disability not covered by the WSIA
NSDM New Service Delivery Model (now WSIB Service Delivery Model)
OAS Old Age Security
OD occupational diseases
OD & SBP Occupational Diseases and Survivor Benefits Program
ODD Occupational Disease Division (WSIB)
OEA Office of the Employer Adviser
OHCOW Occupational Health Clinic for Ontario Workers
OHSA Occupational Health and Safety Act
OP overpayment of benefits
OPM Operational Policy Manual (WSIB)
O/S outstanding
OT occupational therapy
OWA Office of the Worker Adviser
OWS older worker supplement
PD permanent disability
PI permanent impairment
PMT payment
PPD permanent partial disability
Prem premium
PT physiotherapy
PTSD Post Traumatic Stress Disorder
Px prognosis
PYMT payment
q.i.d. 4 times daily (Latin abbreviation)
QPP Quebec Pension Plan
quotid daily (Latin abbreviation)
R right
RBC red blood cell count
REC Regional Evaluation Centre
REO re-open (a claim)
REO6 (Form) Worker’s Continuity Report
REP representative
RG rate group
RHPA Regulated Health Professions Act
RMA Regional Medical Adviser
RMI repetitive movement injury
RO Regional Office
ROM range of motion
RSI repetitive strain injury
RTLW return to light work
RTW return to work (now work reintegration)
RTWS Return to Work Specialist
Rx prescription
SCIP Safe Communities Incentive Program
SDM WSIB Service Delivery Model (formerly the New Service Delivery Model)
SIEF Second Injury & Enhancement Fund
SLR straight leg raising
SMA Section Medical Advisor
SO suitable occupation (formerly a suitable employment or business)
SOB shortness of breath
SPAD Strategic Policy and Analysis Division
SRAP Special Rehabilitation Assistance Program (WSIB)
STEL short term exposure limit
TOJ training on the job program
TP temporary partial (disability)
TP transition plan (in the work reintegration model)
TS temporary supplement
TT temporary total disability
Tx treatment
UMA Unit Medical Advisor
WBC white blood cell count
WCA Workers’ Compensation Act (now the WSIA)
WCAT Workers’ Compensation Appeals Tribunal (now the WSIAT)
WCB Workers’ Compensation Board (now the WSIB)
WFL within functional limits
WHMIS Workplace Hazardous Materials Information System
WLM working level months and radiation exposure
WLS wage loss supplement
WPPs workplace parties
WR work reintegration (formerly RTW)
WSIA Workplace Safety and Insurance Act, 1997(formerly the Workers’ Compensation Act)
WSIAT Workplace Safety and Insurance Appeals Tribunal (formerly WCAT)
WSIB Workplace Safety and Insurance Board (formerly WCB)
WT work transition (formerly labour market re-entry)
WTS Work Transition Specialist