A lost time injury (LTI) is an injury sustained by an employee that will to a loss of productive work time. An injury is considered an LTI only when the injured worker is unable to perform regular job duties, takes time off for recovery, or is assigned modified work duties while recovering.
The lost time injury frequency rate (LTIFR) is calculated using two pieces of essential information: the LTI within a given time frame, and the amount of hours worked in that time frame. The other element of the equation is the standardized rate, that is to say, there are X number of LTIs per a set amount of time.
What Is a Lost Time Injury? A general lost time injury definition is: a work-related incident that results in a worker being unable to return to work. Safe Work Australia states, “A lost-time injury is something that results in a fatality, permanent disability or time lost from work. It could be as little as one day or shift.”
A lost time accident is an accident occurring at work that results in at least one full day away from work duties. This does not count the day on which the injury occurred or the day on which the employee returns to the job. The number of days counted in the lost days' report includes weekends, holidays and days used for vacation.
LTIFR refers to Lost Time Injury Frequency Rate, the number of lost time injuries occurring in a workplace per 1 million hours worked. An LTIFR of 7, for example, shows that 7 lost time injuries occur on a jobsite every 1 million hours worked. The formula gives a picture of how safe a workplace is for its workers.
A lost-time injury is something that results in a fatality, permanent disability or time lost from work. It could be as little as one day or shift. LTIFR refer to the number of lost-time injuries within a given accounting period, relative to the total number of hours worked in that period. LTIFR is a proxy measurement for safety performance.
The incident becomes an OSHA recordable, adding a blemish to a company’s safety record, and leads to unplanned downtime. Between the time off, incident investigation, paperwork, and production loss, the cost of a lost time accident can add up quickly. So how can a lost time accident be avoided?
In the business world, a lost-time injury is any incident or accident that results in an employee no longer being able to perform essential job functions for a set duration. This may be a few hours, days, weeks or even years.
Lost Time Injury – any injury sustained by an employee while on the job that prevents them from being able to perform their job for at least one day/shift. Lost Time Injury Frequency Rate – the number of lost time injuries that occurred during the reporting period. Most companies choose to calculate LTIFR per 1 million man hours worked.
Rates are calculated as N × 200,000 ÷ EH N = number of injuries and illnesses, or number of lost workdays. EH = total hours worked by all employees during a month a quarter, or fiscal year. 200,000 = base for 100 full-time equivalent workers (working 40 hours per week, 50 weeks per year). 1960.2(k)