Classify the employment relationship and third parties before evidence and remedies split into separate systems.

Identify the worker's employer, staffing company, host employer, supervisor, general contractor, subcontractors, property owner, equipment lessor, product manufacturer, material supplier, utility, and any public entity. Collect contracts, purchase orders, scopes, safety allocations, insurance certificates, orientation records, payroll, schedules, badges, timesheets, and communications. Titles such as contractor or temporary worker do not resolve legal status; actual control and Oklahoma law need review.

Define the task and deviation. Was the worker cleaning, opening a line, transferring chemical, welding, cutting, grinding, cooking, roofing, servicing electrical equipment, handling molten material, responding to a leak, working near steam, or entering a process area? Record the normal procedure, permit, isolation, lockout, ventilation, protective equipment, pre-job discussion, simultaneous operations, production pressure, staffing, and who authorized any change.

Preserve the scene without creating risk. Obtain incident photographs, video, process and alarm data, radio traffic, maintenance and inspection records, job hazard analyses, safety data sheets, training, personal protective equipment selection and condition, tool and equipment identity, prior complaints, near misses, audit findings, and corrective actions. If a regulator or insurer takes custody, record exactly what was collected and whether destructive testing or disposal is planned.

Collect emergency and burn care, specialist records, operative reports, rehabilitation, work restrictions, authorized-provider communications, independent examinations if any, and benefit payment records. Verify which entity directed treatment and why. A compensation authorization is not the final word on tort causation or future need. A treatment dispute is not proof that care was unnecessary. Medical opinions should identify burn mechanism, affected tissue, functional limits, prognosis, and relation to work activity.

Track wage replacement, medical payments, mileage, vocational services, impairment ratings, return-to-work offers, accommodations, denials, hearings, settlements, and liens. Oklahoma Title 85A contains definitions, coverage, notice, limitations, exclusivity, third-party, benefit, and subrogation provisions. The operative law and event facts must be reviewed before stating eligibility, amount, deadline, or how a third-party recovery affects benefits.

Civil damages can include categories not measured the same way in compensation, but proof still matters. Document actual wage and benefit history, overtime, career path, restrictions, failed return attempts, retraining, daily activity, pain, scars, psychological care, and future recommendations. Avoid adding gross civil losses and compensation payments without accounting for offsets, liens, subrogation, collateral-source law, and economic methodology.

Determine whether Oklahoma workers' compensation covers this worker, employer, injury, and location, and whether exclusivity or statutory-employer rules affect a claim. Where supported, examine multiple employers, borrowed workers, staffing, owner-operators, contractors, federal employment, railroads, maritime work, Tribal employment, and public employers. Choose the forum from the facts, not a generic workplace page.

Evaluate parties outside the protected employment relationship. A product maker may control design and warnings; a specialty contractor, hot work or isolation. A site owner, operations; a utility, part of a fuel or electrical system; a chemical supplier, formulation and information. Contracts may allocate work but do not alone decide tort duty, retained control, product condition, indemnity, or causation.

Apply workplace rules precisely. Hazard communication, process safety, electrical, welding, protective-equipment, energy-control, and recordkeeping provisions differ. Verify employer, industry, task, equipment, substance, threshold, and exception. A citation requires its inspection file and current legal analysis; no citation does not prove reasonable safety.

Tailor preservation to each record or evidence holder. Name equipment, components, material, samples, clothing, protective equipment, process and alarm data, video, access records, work orders, permits, procedures, communications, photographs, investigation files, training, schedules, and systems. Ask who inspected or removed material. One employer may not reach the host, contractor, product maker, insurer, laboratory, or agency.

Coordinate inspection protocols among interested parties. Address safe access, protective equipment, experts, photography, scanning, inspection, sampling, destructive testing, custody, confidentiality, trade secrets, return, and storage. Production urgency does not justify destroying evidence. Preservation should be proportionate and not halt unrelated operations without legal and technical basis.

Create a claim-specific calendar only after classification. Workers' compensation notice and filing, third-party limitations, Governmental Tort Claims Act notice if a covered public entity is involved, product repose or limitations questions, contractual notice, insurance cooperation, agency-response dates, and evidence retention may differ. Minority, incapacity, death, choice of law, or a federal forum may change the analysis. No general countdown can replace that claim-specific calendar.