Dear Margarida, basically the references are according to your research design. What sector you have opted and what task commitment you want to see will steer your research and the references. Please find a research in USA in 1983 on job/work commitment that may help you. The references used in this paper may also be helpful for your work. Any new research paper on job commitment may be compared to find comparative analysis.

Regards

Dear Mubarak, thank you so much for your help! This is really what I needed, a good starting point in the OT literature! 

Best regards!

Dear Margarida Truninger 

Greetings,

Please find the attached file about you topic may be useful and interesting for you ,

Best Regards,

Thank you Faris!

Best wishes,

M

Dear Margarida,

I found Klein et al. (2012) exceptionally clarifying on the concept of commitment and operationalisation of same. The model presented therein succinctly explicates the antecedents and consequences of commitment in such a manner that it is virtually independent of time and locational confounds. Therefore, it may be of help (or interest at least).

Klein, H. J., Molloy, J. C. and Brinsfield, C. T. (2012). Reconceptualizing Workplace Commitment to Redress a Stretched Construct: Revisiting Assumptions and Removing Confounds. Academy of Management Review, 37(1): 130-151

Kind regards.

For some key references and core arguments see some of our works, listed in chronological order. Best wishes with your work, Andrew

https://www.researchgate.net/publication/200823999_When_do_committed_employees_retire_The_effects_of_organizational_commitment_on_retirement_plans_under_a_defined-benefit_pension_plan

https://www.researchgate.net/publication/200824452_A_comparison_of_linear_and_nonlinear_relations_between_organizational_commitment_and_work_outcomes_References

https://www.researchgate.net/publication/256647622_Combined_effects_of_three_commitment_components_on_focal_and_discretionary_behaviors_A_test_of_Meyer_and_Herscovitch%27s_propositions

https://www.researchgate.net/publication/228271793_What_Kind_of_Commitment_Does_a_Final-Earnings_Pension_Plan_Elicit

Article When do committed employees retire? The effects of organizat...

Article A comparison of linear and nonlinear relations between organ...

Article Combined Effects of the Three Commitment Components on Focal...

Article What Kind of Commitment Does a Final-Earnings Pension Plan Elicit?

Margarida

When you talk about commitment, aren't you reading some on Social Identity Theory too?

Lots of good sources suggested! I would question what is meant by "core." Generally, core concepts are thought of as those that are most cited - or most popular - or foundation to the origins of the field. My research suggests that those are not useful ways of understanding the field - especially as the field grows and becomes fragmented. An interesting alternative is to understand the core concepts as those that are more closely connected with one another (where those connections are causal). This is in contrast to the "belt" concepts that are more atomistic (such as a bullet point list). see attached paper for an example...