They will make your work odd shifts without regret or care or accommodation.
No gratitude / compensation for any extra work. You could be working in research field and could be assigned a marketing sales task across the country, without even bothering about your convenience.
Your salary is a joke. Christmas bonus is a luncheon because you sacrifice for the company. (yes you get that answer).
Horrible behaviour and disrespectful environment.
Background check a company before you get hired. Short term employment will harm you more than the company. If you still accept their employment, you asked for it!