Module 12: Organizational Ergonomics Flashcards
1
Q
macro-ergonomics model
A
- organizational factors
- people factors
- technology factors
2
Q
organizational factors
A
- conflicting objectives
- work overload/underload
- level of supervision
- clarity of goals
3
Q
people factors
A
- physical and mental abilities
- competence, experience, familiarity
- intelligence
- confidence
4
Q
technology factors
A
- clarity of signs, signals, alarms
- display and controls
- difficulty of tasks
- distractions and interruptions
- time pressure
5
Q
types of shift work
A
1) rotational shift systems (rapid, weekly/monthly)
2) permanent night shift systems
3) extended day shift systems
6
Q
rapid rotating system
A
- switch schedule once/twice per week
- causes the least amount of disturbance to the body
7
Q
weekly/monthly rotating systems
A
weekly:
- changes schedule every week
- worst due to circadian rhythm disruption
- easiest to maintain equity
monthly:
- change schedule every month
8
Q
Forward-moving direction vs. backward-moving direction rotation
A
- forward better for shift rotation
- forward causes smaller disturbances in circadian rhythm
- workers like backward rotation more
9
Q
permanent night shift systems
A
- shorter sleep durations and poor sleep quality
- possible to adjust the circadian rhythm
- often feel socially isolated
- higher risk of injury
10
Q
extended day shifts
A
- 9-12 hours
- paid more
- more time off
- more leisure time
- less commute time
- miss out on things
- burn out
- more breaks needed
- slower pace of work
11
Q
health effects of shift work
A
- sleep disturbance
- impact on social life
- safety effects
- digestive problems
- CVD
- obesity
- cancer
12
Q
fatigue
A
decline in mental/physical alertness
13
Q
causes of fatigue
A
1) individual factors
2) workload
3) job factors
14
Q
most alert times
A
9:30-11:30am
6:00-10:00pm
14
Q
least alert times
A
1:00-3:00pm
12:00-5:00am
