thexxy

or even better - let everyone involved choose.

by everyone I mean the employer (which is also the product/service provider), the employees and the customers.

if none of the employees will be willing to get $x for working at evening/night, then an increase in salary for those hours might solve the issue .

how much to increase will depend upon supply and demand.

if none of the customers want a night delivery then there's no need for that anyway, and the employer won't even bother trying to find a solution.

if only a small amount of customers want a night delivery - then the employer might setup a solution where you need to pay 1.5x of the regular price in order for it to be profitable enough for the employer and the employees.

if most customers want a night delivery - then the employer will need to make large adjustments in order to fulfill its customers' needs, or some other competitor will fill the gap.