Join the union, girls, and together say Equal Pay for Equal Work.

The line is a direct exhortation to working women to organize collectively (“join the union”) in order to demand economic justice, specifically wage parity with men for the same labor (“equal pay for equal work”). It reflects a strand of nineteenth‑century women’s rights activism that linked political equality to material independence and fair labor conditions. The phrasing frames equal pay not as a private plea but as a public, collective demand—suggesting that structural inequities in wages are best confronted through solidarity and organized bargaining power rather than individual negotiation.