What "work discrimination" have you encountered at work?

Work discrimination is widespread, mainly in some industries with harsh environment, high labor intensity, low skill requirements and low wages. As a builder myself, I am familiar with all the hidden rules. We get up early every day, look at the stars at both ends and work for more than ten hours at a time. Not only the labor intensity is high, but also the food is poor. In order to save time and improve efficiency, we have to live on the construction site, which is dark and humid, with mosquitoes and flies rampant and rats rampant. Once you catch a cold, you dare not rest. How dare you rest after taking a few pills and carrying them hard? Once the leader finds out that he is likely to be fired, the life of the whole family will be gone. The dust is flying on the construction site, the noise is deafening, and the danger is everywhere, from hand injury to foot injury to electric shock. Falling objects often threaten the safety of construction workers. In severe cases, the machine twists and falls. Casualties on construction sites are not uncommon. I have witnessed many work-related accidents. In the event of an industrial accident, employers pass the buck and throw pots at each other. Because construction workers are mostly temporary migrant workers, there is generally no labor contract, so it is very difficult to safeguard rights. Work is often bossed around by leaders, and people can only swallow it for a living. Most construction workers live at the bottom of society, with poor family conditions, mostly poor second generation or even poor third generation, without education and skills. Who wants to go to the construction site if it is not forced by life? Due to the harsh living environment, most people are aging before they get old, suffering from diseases, and serious physical overdraft makes them lose their labor force very early. Poverty, disease, indifference and discrimination from society mercilessly destroy their body and mind. We call on the society to pay more attention to these workers. When people enjoy the beautiful living conditions, have they thought of these weather-beaten builders?