People around the world are working more than 40 hours every week. Some workers earn US$ 1.00 /diem, some earn US$10.00 /diem, some earn US$100.00 /diem, some earn US$1000.00 /diem and more. Any revenues earned are the result of values and quality every human being possess. Do you ever think of that?
Why some countries are poorer than other countries? Why within a country, some people remain richer while other remain poor?
Of course, different natural resources demand different workers with worth salaries. in fact, the grassroot workers are remmunerated with low payment while a CEO in company or a president is paid insanely expensive.
Maybe the value is very lied on the quality of brain-work result rather than phisical efforts result.
In this 21st century, there are so many workers could not provide employment for themselves and so must rely on companies or profit organizations to survive. Actually, any kind of jobs are acceptable but not acceptable if harming or might result in health problem or death.

We thank to those people in the Haymarket massacre in Chicago in 1886. It was a strong demand of life change to be better. One lesson from this event is, Employers should think of not just looking for profits but life improvement of employees in all aspects as much as possible.

Last but not least, this world will be no more war if people have the same supply. Leaders are the managers to keep rules to this possibility.
Whether capitalism or socialism, its goal is to bring a better life mankind. So, it support each other!