Are job qualifications can be considered a form of discrimination?

i know how you feel were i come from no 1 cares about us because weve all got criminal records but its the main problem they treat us like scum

It depends on the job function. Some job really need the worker to have certain height so he can carry out his duty without much problem. Nationality become a deciding factor, could possibly be due to the language commanded will smooth up the task being given. Therefore, I think most of the times, the requirement does makes sense when the employers are looking for the employee who suits the job best. Discrimination could still happen sometimes undeniably, but it's the employer's right to choose their own workers. Only employed employee have the right to negotiate base on the employment contract and employment act.