Free Disability Income Insurance Study Guide

South Carolina Life, Accident & Health exam — Disability Income Insurance.

Disability income insurance replaces part of a worker's earnings when sickness or injury prevents them from working. For most working people, the ability to earn is their largest asset. This guide covers how a disability policy is built (elimination period, benefit period, benefit amount), the definitions of disability, partial, residual, recurrent and presumptive disability, riders, underwriting, group disability, business disability products, taxation, and coordination with Social Security and workers' compensation.

The building blocks

Elimination period

The elimination period is the waiting time between the start of a disability and the start of benefits: a time deductible. Common choices are 30, 60, 90, or 180 days.

  • A longer elimination period means a lower premium; a 30-day period costs more than a 90-day one.
  • Benefits are usually paid monthly in arrears, so the first check arrives about a month after the elimination period ends.
  • Some policies use a shorter or waived elimination period for accidents than for sickness, and some pay back to day one once the elimination period is met.
  • The elimination period applies to each disability; a probationary period applies only once, to sickness beginning soon after issue.

Benefit period

The benefit period is the longest time benefits will be paid for one disability: for example 2 years, 5 years, or to age 65 or 67. A longer benefit period costs more.

Benefit amount

  • Individual policies usually pay a stated monthly amount chosen at issue.
  • Insurers limit coverage to roughly 60-70% of gross earned income to prevent overinsurance and keep an incentive to return to work. A 60% benefit on $5,000 a month of income is $3,000.
  • The optional Model #180 Overinsurance (relation of earnings) provision can reduce benefits when total loss-of-time coverage exceeds a stated share (not less than 60%) of earned income.

Defining disability

  • Own occupation – the insured is totally disabled if unable to perform the material duties of their own occupation, even if they could work elsewhere. The most favorable definition.
  • Modified own occupation – unable to perform their own occupation and not working in another occupation.
  • Any occupation – unable to work in any occupation suited to their education, training, or experience. Stricter.
  • Split definition – own occupation for an initial period, then any occupation. Common in group LTD.
  • Income replacement (pure loss of income) – benefits are based on the percentage of income lost rather than job duties.

Most policies also require the insured to be under the regular care of a physician.

Partial, residual, recurrent, and presumptive disability

  • Partial disability – the insured can perform some but not all duties; usually a reduced benefit (commonly 50% of the total benefit) for a limited time.
  • Residual disability – a benefit proportional to lost income. If income drops from $10,000 to $6,000 a month (a 40% loss) and the full benefit is $5,000, the residual benefit is 40% × $5,000 = $2,000.
  • Recurrent disability – if the same disability returns within a stated period (often 6 months), it is treated as a continuation of the prior claim, with no new elimination period. Outside that period it is a new disability.
  • Presumptive disability – loss of sight, hearing, speech, or the use of two limbs is automatically treated as total disability.

Occupational vs. nonoccupational

  • Occupational coverage pays for disabilities both on and off the job.
  • Nonoccupational coverage excludes work-related disabilities, which workers' compensation covers. Group short-term disability is often nonoccupational.

Riders and added benefits

Rider / benefit What it does
Waiver of premium Waives premiums after the insured has been disabled for a stated period (often 90 days); often retroactive, refunding premiums paid during that period
Cost of living (COLA) Raises benefits during a claim by an index such as the CPI
Future increase (guaranteed insurability) option Buy more coverage later, as income grows, without medical evidence
Automatic increase Raises the benefit by a set percentage each year for the first several years
Social insurance supplement (SIS) Pays an extra benefit that is reduced by Social Security disability benefits received
Additional monthly benefit Extra income in the early months, before Social Security begins
Return of premium Refunds part of premiums, less claims, at the end of a period
Hospital confinement Added benefit while hospitalized, sometimes waiving the elimination period
Catastrophic disability Extra benefit if the insured can't perform several ADLs or is cognitively impaired
Rehabilitation Pays for retraining to return to work
Transition benefit Supplements income after a return to work at lower pay
Survivor benefit Continues benefits to survivors for a time if the insured dies while receiving benefits
Nondisabling injury Pays medical bills for an injury that doesn't disable

Don't confuse COLA (increases benefits while disabled) with the future increase option (adds coverage before a claim).

Underwriting

  • Occupation class drives the premium and the definitions and benefit periods available.
  • Earned income limits how much can be issued; applicants with irregular income, such as new business owners, may be limited.
  • For impaired risks, the insurer may add an exclusion (impairment) rider (e.g., no benefits for disability from a back condition), lengthen the elimination period, shorten the benefit period, or charge more.

Group disability

  • Short-term disability (STD) pays for a limited period measured in weeks, commonly 13 to 26 weeks.
  • Long-term disability (LTD) starts after STD or a long elimination period and pays for years (the NAIC glossary describes LTD as typically paying two years or longer), often to retirement age.
  • Group LTD usually pays a percentage of salary (often 60%) and is offset by Social Security disability and workers' compensation.

Business disability products

  • Key person (key employee) disability – the business owns the policy, pays the premium, and receives the benefit to offset losses when a vital employee is disabled.
  • Business overhead expense (BOE) – reimburses fixed business costs (rent, utilities, staff salaries) while the owner is disabled, typically for 12 to 24 months. It does not pay the owner's own salary.
  • Disability buy-sell (buy-out) – funds the purchase of a disabled owner's interest. A long elimination period, often a year or more, ensures the disability is lasting; benefits may be a lump sum or installments.

Taxation

Premium paid by Benefits
Individual, with after-tax dollars Tax-free; premiums not deductible
Employer, excluded from employee's income Taxable to the employee
Split employer/employee Taxable in proportion to the employer's share
Employee, pre-tax through a cafeteria plan Taxable
Business (BOE) Premiums deductible; benefits taxable, offset by deductible expenses
Business (key person or buy-sell) Premiums not deductible; benefits tax-free

Social Security disability and workers' compensation

  • SSDI requires work credits and an impairment that prevents substantial gainful activity and is expected to last at least 12 months or result in death. For 2026, SGA is earnings above $1,690 a month for non-blind individuals ($2,830 for blind individuals).
  • Benefits begin after a waiting period of 5 full calendar months (waived for ALS).
  • SSDI beneficiaries become eligible for Medicare after 24 months of benefits (immediately for ALS).
  • Workers' compensation pays for job-related injury and disease without regard to fault. Many private policies offset benefits by workers' compensation to avoid overinsurance.

Common exam traps

  • Longer elimination period = lower premium.
  • Own occupation is the most liberal definition; any occupation (and Social Security's SGA test) is strictest.
  • Residual benefits are proportional to income loss; partial benefits are usually a flat reduced amount.
  • Recurrent disability within the stated period avoids a new elimination period.
  • Presumptive disability: sight, hearing, speech, or two limbs.
  • BOE never pays the owner's salary; buy-sell has a long elimination period.
  • Benefit taxation follows who paid the premium.
  • SSDI: 5-month wait, 12-month duration, Medicare after 24 months.

Quick recap

  • A disability policy is built from the elimination period, benefit period, and benefit amount (about 60-70% of income).
  • Definitions range from own occupation to any occupation; know partial, residual, recurrent, and presumptive disability.
  • Riders include waiver of premium, COLA, future increase option, and SIS.
  • Group plans split into STD and LTD, with offsets for Social Security and workers' comp.
  • Business products: key person, BOE, and disability buy-sell.
  • Coordinate with SSDI (5-month wait, 12-month test, 2026 SGA $1,690/month) and workers' compensation.

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