The “be grateful you have a job” sentiment always sticks in my craw because it is never paired with “be grateful you have employees” and “be grateful we have customers.”
This is a 3-way street. Economic mana doesn’t just drip from the heavens.
Also, don’t let your boss make you feel like your paycheck is a gift. You worked for it, you probably produced significantly more money than is in it, so don’t let your employer imply that being paid is some kind of special kindness that you should thank them for.