Yes, in the beginning of the game, when population grows by 1, workforce will also grow by one. But then on one of the streams the players suggested to add an upgrade, which would increase workforce growth. So, if you have workforce growth of 1.2, then when your population grows by 1, 1, 1, 1, 1, 1, 1, 1, ... the workforce will grow by 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1,...