They declare minimum salary to the social security which is a legal breach but is not ethically correct.
They make you to work on weekends for support and they may replenish the day (or may not)
They don’t pay that good
They will see you in a bad manner if you leave the office on time (if any time you have the chance), and they have a time checker so that you arrive early on time.
You are fully replazable at any time no matter how many years you work there or what you do.