Workers need new energy, which they can get from new decorations.
Workers need to have rest and get new energy. Production stops without energy.
Workers refill their energy by themselves, when they look at decorations near their houses and convert “Fun points” into energy. The player gets “Fun points” when buying and placing new decorations on the farm. However, sooner or later, the workers get bored from the same decorations and the player has to spend the half of the money to make them happy again and let the production continue.
Energy can be partially derived from friends on neighboring islands-farms if the player pays them a visit.