We can infer by the term "Russian Factory" we're discussing post Revolutionary, or Soviet Russia. Russia before the Revolution had no industrial base, and therefore no factories. In fact, one of the proclaimed reasons for becoming Communist was to usher in an Industrial Age.
The difference in industrialization between East and West was that the western industrialization was driven by market forces. In the East, the effort was directed by the totalitarian government.
Although factory conditions in the West were not ideal, workers could choose another where conditions were better, or they could strike, or they could petition the government. Even so, there was violence, but conditions did improve. No so under Soviet Russia. The only appeal to rectify poor conditions was revolt, which would have been crushed by the government. Conditions in Soviet factories were undoubtedly worse than their western counterparts.
I'm afraid we need more context for this question. Since you use past tense, are you talking about before the Russian Revolution? Also, European factory is quite vauge. I imagine the conditions would vary from country to country, but would be more advanced in England and Russia.