Here is another article relevant to your present study. You can ask the authors for the questionnaire they used. 

http://www.erint.savap.org.pk/PDF/Vol.2(2)/ERInt.2013(2.2-09).pdf

Dear Abiodun, here are several articles related to your study. Hope they will be useful for you

http://www.fairwear.org/ul/cms/fck-uploaded/documents/countrystudies/bangladesh/WorkingconditionsintheBangladeshigarmentsectorSocialdialogueandcompliance.pdf

http://www.erint.savap.org.pk/PDF/Vol.2%282%29/ERInt.2013%282.2-09%29.pdf

. Following are the items you can use in questionnaire

TOP LEVEL

Organization’s goals

• Organizational structure

•  Organizational stability

• flexibility and Leadership

MIDDLE LEVEL 

• Relations with immediate manager

• Immediate manager as coordinator

• Freedom to make decisions

• Authority

Democracy and justice

• Manifest freedom of expression

Conflict and handling of conflicts

• Prevalence of conflicts

• Conflict resolution

Humanity and social support

• Humanity

• Profitability and humaneness

• Social support

BOTTOM  LEVEL

Work factors

Skill discretion

• Monotonous or developing work

Work decision authority

• Ability to decide how the work is

to be done

• Ability to decide what work is to

be done

Resources

• Skills, means and decision-making

rights

• Time for reflection

Outcomes

Stress symptoms

• Exhaustion

• Burnout

• Cognitive disruption

• Physical symptoms

• Insomnia and restlessness

Health