Chapter 14 Flashcards
Who belong to the risk groups for accidents at work?
Male workers, younger workers and those working in agriculture, forestry, manufacturing and construction
How did the perspectives on workplace safety change over the last century?
It changed from an emphasis on technical measures (making sure the machine is okay), to individual-based measures (e.g. personnel selection and training), to a focus on the application of general management principles
What is accident exposure?
Refers to the number of opportunities for accidents of a certain type in a given time in a given area -> delivery biker has a higher accident exposure than someone working in the office
What is accident propensity?
The conditional probability that an accident occurs, given the opportunity for one -> e.g., the biker being tired, weather conditions being bad
What is an unintended error?
The action does not match the intention
What are the two categories of unintended errors?
- Slips: simple action is not carried out as intended or planned (e.g. a spelling mistake)
- Lapses: omit to perform a required action; short-term memory lapse (e.g. forgetting to tighten the wheel nuts after changing a tyre)
What is an intended error?
One’s action matches one’s intention, but the desired result is not achieved
What are the two categories of intended errors?
- Mistakes: deficiencies or failures in the judgmental and/or inferential processes involved in the selection of an objective
- Violations: action is performed as intended, it deliberately flouts safety rules and procedures thus it is not an error
What are the two types of mistakes?
- Rule-based errors: incorrect application of a rule
- Knowledge-based errors: the situation is wrongly understood
What are the three types of violations?
- Routine violations -> taking a path of least effort
- Optimizing violations -> involve optimizing non-functional goals ahead of safety
- Situational violations -> occur when workers see violations essential to get the job done
What are the three different types of work-related actions?
- Skill-based actions -> routine actions in a highly familiar operating environment
- Knowledge-based actions -> required in novel situations which demand problem-solving and reasoning to work out a course of action
- Rule-based actions -> the situation has been encountered before, meaning that the action is governed by the selection and use of stored rules
What are active failures?
Unsafe acts; cognitive errors or violations of safety rules
What are latent failures?
- Fallible managerial decisions
- Line management deficiencies
- Psychological precursors to unsafe acts
- Inadequate defences against unsafe acts
Explain the accident causation scenario of Wagenaar et al. (1990)
An accident is the endpoint of a series of events that starts with bad management decisions -> latent failures -> affect psychological processes determining the actual behaviour at work -> workers invited to commint unsafe acts -> potential accidents
The general failure types (GFT’s) are divided into 4 categories, what are these categories?
- Physical environment -> design failures, missing defences
- Human behaviour -> poor procedures and defective training
- Management -> organizational failures and lack of communication
- Failures in maintenance -> bad maintenance of machinery and tools