Salaries or wages
According to the laws in the country, an employee is guaranteed a minimum number of wage per working hours and he/she should not settle for anything less than that. Some of the employers can misuse this law, but they can be tackled accordingly.
Number of leaves
Just like the minimum wage rate, an employee has the right to take days off as well. This number can vary from place to place, but there is a fixed rule for the minimum number of leaves available to an employee.
The employees should be given proper security and the organisation should not take this lightly at all. If the workers feel unsafe, they can opt to quit.
Discrimination and abuse
You might face some sort of discrimination and abuse in a particular organisation, which is totally against the labour laws of any country. So, you can always complain about the offender to the concerned department.