Table 5 Factor loadings identified using principal component analysis and the orthogonal VARIMAX rotation *

Work Station

My desk at work has suitable height

I have enough space to work at my office

I have a file holder I use when I am typing

My chair supports my lower back

Keyboard is placed directly in front

I sit straight in front of screen

Eigenvalue

% of Variance

Body Posture

I find my job physically exhausting

When I work my hand is placed in a straight line

When I work my head is bended

When I work my head is twisted towards the left or right

When I work my body is twisted towards the left or right

I sit in a symmetrical position

I sit for long hours in one position

For 2 hours per day I sit with lifted shoulders

During my work I sit in an awkward posture

My work requires performing repetitive tasks

Eigenvalue

% of Variance

Break Time

I can divide my work tasks

I find my work breaks sufficient

I can decide when to take a break

I can decide when to start and to stop

I alternate in my body position

I alternate in my job task

I perform job tasks without a computer

After 2 hours work I take a break for at least 10 minutes

My breaks are spent outside the office

Eigenvalue

% of Variance

Job Control

I participate with other colleges in decision making

I participate in implementation of job tasks

My work develops my abilities

In my work I have the chance to learn new things

I have to be creative in my work

I undertake different tasks in my work

I decide how to perform my job task

I determine the time & speed job tasks

I solve work problems by my self

Eigenvalue

% of Variance

Job Demands

I find trouble to finish my job tasks

I take regular over times

I have limited time to finish my job

I work with max speed to finish my tasks

I work under extensive work pressure

I find my work tasks difficult

Eigenvalue

% of Variance

Social Support

I find support from supervisors

I receive positive comments

My colleagues are helpful

My supervisors are helpful

I get personal advice from my colleagues

My supervisors are considerate

No contacts with other colleagues

The work flow goes smoothly

I can ask and enquire in my work

My work tasks depend on other colleagues

The work atmosphere is comfortable

I find support from colleages

Eigenvalue

% of Variance