The phrase "arbitrary imposition" means the act of forcing something on someone without reason or fairness. It refers to a decision or rule that is randomly or unfairly imposed on someone without any valid justification. Full definition
The defense argued that ``... Alabama's capital sentencing statute is unconstitutional because it does not specify the weight the judge must give to the jury's recommendation and thus permits arbitrary imposition of the death penalty.» (cochranfirmdothan.com)
The teachings of the Church are not an arbitrary imposition that infringes the legitimate freedom of individuals; nor are they a merciless burden imposed upon the weak. (faith.org.uk)
As the Pope explains in his 1995 «Letter to Women,» «a certain diversity of roles is in no way prejudicial to women, provided this diversity is not the result of arbitrary imposition, but is rather an expression of what is specific to being male and female.» (firstthings.com)