Are the recruitment requirements of many occupations such as height illegal? Is it discrimination?

The height requirement of 1 is not illegal, but illegal or discriminatory. This kind of situation is very common in all walks of life, such as front desk, welcoming guests, etc., which requires height and appearance.

Of course, the height or other requirements of some positions are unreasonable but reasonable, so we can't generalize that there is something wrong with the unit.

For example, the security guards recruited by the company are too short, only 1.5 meters, and their physique is poor. If you encounter thieves or robbers, can you protect the property safety of the unit?