How do you get a chance for a promotion from a conflict between management and employees on internal issues (like schedule,leaves, off days etc)?

What I would do is to mediate the conflict, making a needs assessment in the organization, considering that employees are the backbone of the organization.

A manager should act as a mediator in between and try to convince that although

these internal issues like schedule,leaves,off days are part and according to the company policy,yet exceptions to these are also necessary on a case to case basis.

 DEPEND ON THE TARGET PRECENTAGE OF PRODUCTION