But I'm thinking that this may be a cultural diffenrence. We have talked a bit about this and from what I'm hearing Poland isn't very ground breaking when it comes to equality in any forms (gender, sexual orientation, different religions etc.).
Actually, Poland was the first country in the world where women could participate in political life, if they paid taxes (18th century). Poland was the first (and for a few centuries, the only) country in Europe that invited people of various religious denominations to live, prosper and it protected them from discrimination. In 1932 Poland codified the homosexual and heterosexual age of consent equally at 15 and that was 36 years before Norway decriminalized homosexuality.
Unlike Norwegian law, Polish law had never criminalized homosexuality, although occupying powers had outlawed it in 1835. Women in Poland has always had an equal access to education and in 1808 Poles established a central supervisory board of women, whose function was to administer programs of education for girls in the Dutch of Warsaw. That was the first time in the world's history when women were charged with a task of governmental administration. I'd say these were groundbreaking, but I don't blame you for not knowing, but now you do.
I wouldn't say the gender difference are completely off the table in any country. After all that equality is codified but, let's say, eye color is not. Norwegians don't discuss equal opportunities for blue eyed or green eyed persons but they do mention the wonderful gender equality. Why's that? Is the gender equality indeed that deeply engrained in the Norwegian society if the laws have to exist to address the issue, but there are no laws making people of various eye colors equal?
Some individuals may have issues with gender under various circumstances, but talking about them in the context of the entire country of Poland is a little far fetched, to say the least.
Perhaps you are approaching the whole issue from the wrong angle and perhaps the issue is not gender by the usual micro-politics on a job site, or at any work place for that matter. I ran a construction business and I employed Poles, among others. I experienced exactly the same issues as you mention and I dealt with them with the time proven solution. I was open to constructive suggestions but ultimately I managed the jobs they performed the work as instructed. A skillful manager can be put the idea in employees' minds without confrontational undertones.