OCCUPATIONAL STRESS INDEX FOR PROFESSIONAL DRIVERS

Permission to use any of the OSI instruments should be obtained from Dr. Karen Belkic: Center for social Epidemiology, Room 202, 1528 6th Street, Santa Monica, California email: kbelkic@hsc.usc.edu.

Our policy is to provide permission free-of-charge for all research endeavors aimed at improving the job conditions and health of working people. We will be happy to answer questions concerning its application, and to discuss how the OSI might be best implemented in a given setting. All emerging publications using the OSI should acknowledge permission from the author and should cite the appropriate bibliographic references.


INFORMATION ABOUT THE WORKPLACE: FOR PROFESSIONAL DRIVERS


Unless otherwise specified, all of the questions refer to driving on the job. Please choose the single answer which best applies to your working situation, unless otherwise specified. Feel free to write your comments.

1. Total number of working years:_______________
2. Total number of years as a professional drivers:_______________
3. Have you worked at other jobs besides being a professional driver? Yes No
If yes, please list the jobs you've had number of years at each:
__________________ From (year): _____________ To (year):____________________
__________________ From (year): _____________ To (year):____________________
__________________ From (year): _____________ To (year):____________________

4. Type of vehicle which you currently drive at work:
a. Crane of forklift
b. Truck
c. Tramcar
d. Official car
e. City bus
f. Suburban bus
g. Trolley car
h. Intercity bus
i. Subway
j. Local train
k. Taxi
l. Other:_________

5. Which other vehicles have you previously driven at work?
__________________ From (year): _____________ To (year):____________________
__________________ From (year): _____________ To (year):____________________
__________________ From (year): _____________ To (year):____________________

6. Do you drive mainly on one particular route?
Yes No

7. Do you drive mostly:
a. In the city?
b. On long routes ( suburban and inter-city routes included here )?

8. Do you drive most often:
a. Alone in your vehicle?
b. With 1 or 2 other persons in your vehicle?
c. With many passengers in your vehicle?

9. Is driving your only task on the job?
a. Yes
b. No, during my driving tours, I also have other tasks such as checking or selling tickets, opening and closing the doors, giving information, etc.
c. No, I have tasks other than those during the driving tours. My other tasks outside driving tours are:___________________________________________________

10. Does it occur that during you work hours, you have nothing to do?
a. Yes, often
b. Occasionally
c. Rarely or never. I always have something to do during my work hours

11. My pay is:
a. Based upon how much I myself work
b. Based upon how much my group or collective, as whole, works
c. Fixed

12. How long does your work day usually last? ________hours
Do you ever work longer than that? Yes No
If yes, how often?________ and for how many hours/day?________

13. How many work hours to you actually spend driving per day?_________

14. How many days do you work per week?_________
How many weeks of paid vacation to you have per year?_______________

15. Do you work at another job outside your regular one? Yes No
If yes, how many hours per week?_________ What do you do? ___________________

16. Do you always have at least one break during your work day? Yes No
If yes, how many breaks do you usually have?_______
How long is your usual break?___________

17. The times at which you drive / your work schedule:
*Do you have a regular work schedule? Yes No
*If yes, when do you begin work? _____________ End work:________________

* Do you drive the split shift (early morning and afternoon rush hours)
a. Yes, I constantly work the split shift
b. Sometimes
c. Rarely or never

*Do you drive in the dark/at night ?
a. No, I work (drive) only during the daylight hours.
b. Yes, I drive in the city at night, and/or when it's dark.
c. Yes, I drive inter-city (long routes) at night, and/or when it's dark.
(If no, continue with question 18)

*If you drive on the job at night,
Are the roads well lit? Yes No
Are the roads divided according to the direction of traffic? Yes No

*Do you drive after midnight (third/night shift)? Yes No
If yes, do you drive the night shift:
a. Constantly
b. On a rotating basis (describe please how this rotates:_____________________________)

18. With respect to time pressure at work:
a. I don't experience any substantial time pressure at work. It is only important that I arrive at my destination within a reasonable amount of time.
b. Sometimes I must arrive at a given time
c. I have an extremely tight schedule. If I arrive late, I face unpleasantness or even penalty. However, I can usually arrive on schedule.
d. I have an extremely tight schedule. If I arrive late, I face unpleasantness or even penalty.
It happens, that despite my efforts, and for objective reasons, I sometimes or often arrive late.

19. Do you perform heavy lifting at work?
a. Yes, often times during the day lift 50 kg ( 110 lbs), or more.
b. Yes, I lift from 20 to 50 kg loads (44 - 110 lbs) during my usual work day.
c. Yes, I lift up to 20 kg (44 lbs) during my usual work day.
d. No, I rarely or never lift anything heavy during work.

20. What are the physical conditions like in your vehicle cabin?
a. I have good shock absorbers and isolation. I don't usually feel much vibration nor gases/fumes.
b. I have poor shock absorbers, but good isolation. I feel vibration but not much gases/fumes
c. I have good shock absorbers but poor isolation. I don't usually feel much vibration but I do feel gases/fumes because the isolation is poor.
d. I have poor shock absorbers and poor isolation. I feel vibration and also gases/fumes.

21. What is the temperature like in your vehicle cabin?
a. I have proper ventilation/air conditioning, as well as adequate heating. It never gets extremely hot (over 30 degrees C/ 86 degrees F) nor very cold in my cabin (not less than 15 degrees C/ 60 degrees F)
b. I have good heating, so it never gets too cold in my cabin. However, I don't have a proper ventilation/air conditioning system. Especially in the summer, it gets very hot (over 30 degrees C/ 86 F)
c. I don't have proper ventilation/air conditioning, nor is the heating system adequate. Especially in the summer, it gets very hot (over 30 degrees C/ 86 F) and especially in the winter is can get cold(less than 15 degrees C/ 60 degrees F)

22. Do you drive under specially hazardous conditions (check all answers that apply)
a. Yes, I carry flammable/explosive material in my vehicle.
b. Yes, I drive along winding, narrow roads
c. Yes, I face threat of violence from passengers
d. Yes, for another reason(s): ______________________________________________
e. No, I face ordinary traffic conditions, but no special hazards.

23. Have you even had an accident or been injured (including assault) at work?
a. No
b. Yes, only of a minor nature
c. Yes, I have had one or more serious accidents or have suffered serious physical harm at work:
Please briefly describe all serious accidents or injuries
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________

24. Have you ever witnessed a serious accident at work?
a. Yes, I have observed one or more accidents with a fatal outcome
b. Yes, I have observed one or more serious accidents, but I have never witnessed a fatal outcome.
c. I have heard about serious or fatal accidents at work, but never seen this.
d. No, I have never witnessed or heard about a serious accident at work.

25. With regard to on-the-job driving and weather conditions:
a. I drive under all weather conditions, without exception.
b. I drive under various weather conditions, but when visibility is decreased substantially (e.g. snowstorms, heavy fog, etc.) I don't drive.

26. My work vehicle:
a. Often breaks down.
b. Sometimes breaks down
c. Very rarely or never breaks down.

27. Objectively, how are interpersonal relations at your workplace?
a. Excellent, we all get along together and misunderstandings are rare.
b. Fair, sometimes there are misunderstandings and tension among us.
c. Poor, there is a lot of tension and conflict among us.

Recent changes in your working conditions

28. In the past six months has there been: (Please check all which apply)
a. An increase in the length of your work day?
b. A decrease in the length of your work day?
c. Increased time pressure/number of deadlines?
d. An increase in work responsibility?
e. Demotion with pay cut?
f. Promotion with pay raise?
g. Threat of being laid off?
h. Other changes, please specify:_________________________________________

Some open-ended questions about your work as a professional driver:

29. What could be done to improve working conditions as a professional driver of your profile?

 

30. Which of the above suggestions do you consider to be the most important?

 

31. What is the most difficult aspect of being a professional driver of your profile?

 

32. What do you think could be done to make that difficulty less of a burden?

 

33. What is the best part(s) about being a professional driver of your profile?

 

34. If attempts were made to improve the working conditions of professional drivers of your profile,
what would you suggest to preserve the good aspects of your work?

 

35. Other comments:


DRIVER OSI SCORE SHEET

UNDERLOAD
Homogeneous Information
IU1
1 Question 6=yes (drives on a fixed route)
0 Question 6=no (drives on a various route)

Low frequency of incoming signals (<1 signal/minute)
IU2
0 Question 7=a (drives in city/high flow of information)
2 Question 7=b (long route driver/<1 new signal/minute)

No need for communication/Works alone
IU3
2 Question 8=a (drives alone) (see also 9c)
0 Question 8=b or c (others are in the vehicle)

Automatic decision-making
CUT
1 Decisions follow from input, but require judgment (Essential feature of driving)

Homogeneous Tasks
OU1
2 Question 9=a (homogeneous tasks and few in number)
1 Question 9=b (homogeneous tasks and more numerous)
_ Question 9=c (score this based on qualitative review of the answer to c)

Simple Tasks
OU2
2 Question 9=a or b (simple tasks)
_ Question 9=c (score this based on qualitative review of the answer to c)

Nothing to do
OU3
2 Question 10=a (Often nothing to do)
1 Question 10=b (Occasionally nothing to do)
0 Question 10=c (Always something to do)

Fixed Pay
GU1
0 Question 11=a or b (based on individual or group norm)
2 Question 11=c (fixed pay)

 

HIGH DEMAND

Three or more information sources simultaneously

IH1
2 Essential feature of driving

Heterogeneous information
IH2
0 Question 6=yes (drives on a fixed route/homogeneous information)
1 Question 6=no (drives on a various routes(fairly heterogeneous information))

Visual Input Primary
IH3
1 Visual input primary but not only modality (essential feature of driving)

High frequency of incoming signals (> 5 new signals per minute)
IH4
2 Question 7=a (drives in city / high flow of information / > 5 new signals per minute)
0 Question 7=b (long route driver / low flow of information/ <1 new signal/minute )

Three sensory modalities simultaneously
IH5
2 Drivers receive visual, auditory & somatosensory signals often simultaneously (essential feature of driving)

 

Communication necessary for work
IH6
0 Question 8=a (drives alone (see also 9c)
1 Question 8=b (1-2 persons in vehicle/ see also 9c)
2 Question 8=c (must communicate with public and mass transit operator)

Complex Decisions/Interrelated Elements
CH1
0 Fairly automatic decisions /essential feature of driving

Complicated Decisions/Many Elements
CH2
0 Fairly automatic decisions / essential feature of driving

Decisions affect the work of others
CH3
0 Questions 9=a, b or c (if no supervisorial work)
2 Questions 9=c (if supervisorial work)

Rapid Decisions
CH4
2 Essential feature of driving

Heterogeneous Tasks
OH1
0 Question 9=a or b (homogeneous tasks)
_ Question 9=c (score this based on review of the qualitative answer to c)

Simultaneous Task Performance
OH2
2 Question 4 =c, e or g and Question 9=b
(urban mass transit-drives, checks and/or sells tickets, gives information, opens and closes doors)
1 Question 4=a,b,d,f,h, i, j or k, and Question 9=a or c
(some simultaneous task performance, but less than above)

Complex Tasks
OH3
0 Question 9=a or b (simple tasks)
_ Question 9=c (score this based on qualitative review of the answer to c)

Rapid Task Execution
OH4
2 Essential feature of driving

Piece Rate
GH1
2 Question 11=a (By individual work)
1 Question 11=b (Group work)
0 Question 11=c (Fixed pay)

Long work hours
GH2
2 Question 12, 14, & 15 =a (frequently over 48h/week, &/or occasionally over 60h/week)
1 Question 12, 14, & 15 =b (frequently over 42h/week, &/or occasionally over 48h/week)
0 Question 12, 14, & 15 =c (rarely over 42h/week)

Two or more jobs
GH3
2 Question 15=yes
0 Question 15=no

Rest breaks
GH4
0 Question 16=a yes (always at least one break)
2 Question 16=b (not always breaks)

Night shift work
GH5
2 Question 17(last part) =regularly rotates through the third shift
1 Question 17(last part) = night shift only
0 Question 17(last part) = doesn't work the night shift

STRICTNESS

Strict requirements for signal detection

IST
2 Essential feature of driving

Strict problem solving strategy
CS1
1 For drivers there are a few, but limited number of problem-solving strategies

Strictly defined correct decision
CS2
1 For drivers there are a limited number of correct decisions

Strict evaluation of performance
OST
1 Others (especially law enforcement) do evaluate performance.

Fixed Posture
GS1
2 Drivers are essentially constrained during driving

Limited work space
GS2
2 Drivers work in a confined space

EXTRINSIC TIME PRESSURE

Control of incoming signals

IEPT
2 Drivers have no control over the speed of incoming signals

Decisions cannot be postponed
CEPT
2 Essential feature of driving

Control of Task Performance Rate
OEPT
1 Drivers have only partial control over this

Deadline Pressure
GEP1
0 Question 18 =a (no deadline pressure)
1 Question 18=b (occasional deadline pressure)
2 Question 18=c or d (frequent deadline pressure)

Speedup
GEP2
0 Question 18 =a (no speed-up pressure)
1 Question 18=b (occasional speed-up pressure)
2 Question 18=c or d(frequent speed-up pressure)

AVERSIVENESS/NOXIOUS EXPOSURES

Glare

INOX1
0 Question 17 (part 3) =a, (drives only during daylight hours)
2 Question 17 (part 3) =b or c (drives at night)

Noise
INOX2
1 Based on road noise measurements (85dB)
(unless there are more specific data available on cabin noise levels, then score as per general OSI:
90dB or more =2, moderate noise level 80 - 90dB = 1, minimal noise exposure = 0)

Isometric lifting
ONOX1
2 Question 19=Over 50 kg. regularly
1 Question 19=20-50 kg.
0.5 Question 19=up to 20 kg.
0 Question 19=no noteworthy lifting

Vibration exposure
ONOX2
1 Question 20=a or c (good shock absorbers)
2 Question 20=b or d (poor shock absorbers)

Heat Exposure
GNOX1
0 Question 21=a (adequate ventilation or air-conditioning )
1 Question 21=b or c (exposed to heat > 30 °)

Cold Exposure
GNOX2
0 Question 21=a or b (adequate heating)
1 Question 21=c (inadequate heating)

Exposure to fumes, gases &/or dusts
GNOX3
1 Question 20=a or b (good isolation, doesn't feel fumes)
2 Question 20=c or d (poor isolation, often feels fumes)

AVOIDANCE (SYMBOLIC AVERSIVENESS/DISASTER POTENTIAL)

Need for sustained alertness to avoid serious consequences

IAVOIT
2 Vigilance is the driver's primary task

Serious consequences of wrong decisions
CAVOIT
2 Wrong decision by a driver can obviously have fatal consequences

Hazardous Task Performance
OAVOIT
2 Question 22 = a-d (special hazards present)
1 Question 22= e (usual traffic conditions)

Work Accidents or Injuries
GAVOI1
0 Question 23 = a (none)
1 Question 23 = b(minor)
2 Question 23 = c(serious)

Witnessed Physical Harm/Injury at Work
GAVOI2
2 Question 24 = a (witnessed fatal accident at work)
1 Question 24= b (witnessed serious accident at work)
0.5 Question 24 = c (heard about but never witnessed a serious accident at work)
0 Question 24= d (never witnessed a serious accident at work)

CONFLICT/UNCERTAINTY

Signal/noise conflict

ICNFL1
0 Question 17=a (drives only during daylight) AND
Question 25=b (drives only with good visibility)
1 Question 17=b or c (drives at night or dark )OR
Question 25=a (drives under all weather conditions)
2 Question 17=b or c (drives at night or dark) AND
Question 25=a (drives under all weather conditions)

Signal/signal conflict
ICNFL2
1 This occurs occasionally for drivers in road signs, information from other participants in traffic, etc.

Missing information needed for decision-making
CCNFL1
2 This is often the case for drivers

Contradictory information
CCNFL2
2 This is often the case for drivers

Unforeseeable events require new plan
CCNFL3
2 Drivers must continually adjust their plan of action based on traffic conditions

Conflicting demands in time and space
OCNFL1
0 Question 18=a, b or c (no)
2 Question 18=d (yes)

External conditions hamper task performance
OCNFL2
2 Question 25=a (drives under all weather conditions) AND
Question 26=a (frequent vehicle breakdown)
1 Question 25=a (drives under all weather conditions) OR
Question 26=a or b (frequent or occasional vehicle breakdown)
0 Question 25=b (drives only under good visibility) AND
Question 26=c (rare vehicle breakdown)

Emotionally-charges work atmosphere
GCNFL1
0 Question 27=a (no)
1 Question 27=b (somewhat)
2 Question 27=c (highly emotionally-charged)


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