There’s an ancient holy book called Sefer HaChinuch that lists all 613 Mitzvos divided by Parshiyos of the Torah, and offers amazing explanations of the Mitzvos. The author of this fantastic Sefer, is a mystery. All we know about him is that he was a great scholar from Spain, who lived sometime in the 13th century (long before you were born).
Here, after explaining the Mitzvah not to plow your fields using an ox and a donkey together, this mysterious author adds the following:
From this Mitzvah, every wise person should take a lesson not to hire two people to work side-by-side with each other, if you know that they are very different in nature or in habit. Think about it… If the Torah is careful about the pain of animals who work for you, this is surely the case for people you employ!
Sefer HaChinuch, Mitzvah 550
BTW: Although it is not clear who wrote Sefer HaChinuch, we do know that the book was written by a father for his son, who was just becoming Bar Mitzvah. Now you know why it was called Sefer HaChinuch – the Book of Education.