Strike! (2006)

Agnieszka, a welder, is a loyal and dedicated worker and a perennial “Heroine of Labor.” Taunted by her peers for being such a paragon of virtue, she nonetheless advocates tirelessly for workers’ rights without much reward. Living alone with her teenaged son, she spends her days on endless, repetitive tasks, but a glimmer of joy arrives when a happy-go-lucky, trumpet-playing newcomer takes an apartment in her block and the two start a relationship.