So if you think unions are impossible without government laws, and you are against laws in this matter, then you imply that unions cannot exist? What do you then think about the working conditions in the 19th century, and the fact that factories utilized workers until they were damaged and then replaced them with new immigrants?
Increasing standards of living depend entirely on capital accumulation and investment. That is, they depend entirely on productivity per worker. Working conditions became more favorable as productivity increased. It was/is through increases in productivity that man can substitute leisure for work (i.e. the shortening work week), because it is only through increases in productivity that real wages rise. It was also only due to increases in productivity and and growth in industry that competition for workers rose, forcing competing firms to offer better conditions for their workers.
I am not sure on the accuracy of the idea that “factories utilized workers until they were damaged and then replaced them with new immigrants.” New immigrants threatened already employed individuals because they were oftentimes willing to work for lesser wages. However, this does not hurt the worker either. It may force workers to look for new lines of work, but in a healthy, growing economy new work should not be difficult to come by. It is the fundamental scarcity of human labor which makes everything else scarce, practically speaking. Economy-wide, given the opportunity to exploit previously unexploited resources (those which are not yet “economic goods”) there will always be demand for labor as long as there is adequate supply, offering itself at an adequate price. Furthermore, firms that work with lower wages tend to decrease the price of their goods, increasing the real wages of those who buy their goods.
It should be mentioned that this rise in the standards of living of society has occurred despite of the existence of government-backed labor unions, not as a result.
Now about guilds, how do they help?
Guilds are monopolies, and as such are harmful.