All Depends upon the How is your nature as employer. If your are good in behaviour to all and your servants, they will work happily and you will also help them more out of their wages. But if u r rude, then even u pay them more they will abuse you in your absence, As regards Relegion. Islam Always teach equality. Slave and the owner are equal to GOD. U can see this in mosque no diffrence of race and colour. Islam wants to apply this in real life too.