Rich Earth

Rich Earth
UpgradeCost: 3
You may hire workers for free.
It was hardly work at all, minerals abound!
Green Tech 0

Card-Specific Rulings
You still have to put a card from your hand into the worker zone, even though you don't have to pay gold to hire a worker. And you still can only hire one worker per turn. — Sirlin
If an effect increases the cost of hiring workers, you still have to pay that cost increase. For example, if something increased the cost to hire workers by 1 for all players, you'd pay 1 to hire a worker, while players without Rich Earth would pay 2 to hire workers. — Sirlin