A laying worker is a female worker bee that develops the ability to lay eggs. Unlike the queen, however, these eggs are unfertilized and cannot produce female worker bees or queens. Under normal conditions, worker bees do not lay eggs, but certain circumstances within the colony can trigger this behavior.
This guide explains what laying worker bees are, why they develop, and how they affect the health of a honeybee colony. It also outlines practical ways to prevent laying workers from appearing and the steps beekeepers can take if the problem arises. Since the queen bee is responsible for producing fertilized eggs, the presence of laying workers is a sign that something is seriously wrong. Their unfertilized eggs develop only into drones, which contribute little to the day-to-day survival of the colony beyond mating with virgin queens.
Under normal circumstances, a young queen leaves the hive on one or more mating flights to a drone congregation area, where she mates with several drones. She stores the collected sperm in a specialized organ called the spermatheca and uses it throughout her lifetime to fertilize eggs. Fertilized eggs develop into female worker bees, while the queen can also lay a limited number of unfertilized eggs that become male drones whenever the colony requires them.
Drone bees cannot mate with worker bees or transform them into queens. Likewise, worker bees cannot become queens after the original queen is lost. In the absence of a functioning queen, however, some workers may begin laying unfertilized eggs. Because these eggs produce only drones, no new worker bees are raised, and without a steady replacement of workers, the colony eventually declines and dies.
Why Worker Bees Begin Laying Eggs
In a healthy colony, only a very small percentage of worker bees—typically around 1%—have partially developed ovaries capable of producing eggs. Even then, they lay very few eggs, and their activity has little or no effect on the colony.
The primary cause of laying workers is the absence of a healthy, egg-laying queen. When the queen dies, disappears, or becomes incapable of laying fertilized eggs, brood production soon stops. Normally, pheromones released by both the queen and developing brood suppress ovary development in worker bees, preventing them from laying eggs.
When both the queen and brood are absent, these pheromones disappear from the hive. As a result, the ovaries of many worker bees begin to develop over several weeks. Instead of a single laying worker, an affected colony often contains dozens or even hundreds of workers laying unfertilized eggs, making the problem much more difficult to correct.
How a Colony with Laying Workers Collapses
Worker bees typically live for two to six weeks during the active summer season and up to about twenty weeks during winter. As older workers die from the demands of foraging and hive duties, they are continuously replaced by newly emerged workers raised from healthy brood. This constant cycle is essential for colony survival.
Worker bees are responsible for collecting nectar, pollen, water, and other essential resources. As the worker population declines and no new workers emerge, the colony loses its ability to gather food. Eventually, stored honey is exhausted, leaving the remaining bees to starve.
Worker bees also maintain hive cleanliness and protect the colony from disease, pests, and predators. As their numbers continue to fall, sanitation deteriorates, making the colony increasingly vulnerable to infestations and infections that further accelerate its decline.
Preventing Laying Worker Bees
The most effective way to prevent laying workers is to maintain a healthy, productive queen in every colony. A vigorous queen lays thousands of fertilized eggs during the season, ensuring a continuous supply of worker bees. She also produces pheromones that regulate colony behavior, maintain social order, and suppress egg-laying by worker bees.
Regular hive inspections help confirm that every colony remains queenright. If a queen dies, swarms away, or shows signs of failing, replace her as quickly as possible. Waiting too long to introduce a new queen increases the likelihood that worker bees will begin laying unfertilized eggs.
Practicing timely requeening is one of the best long-term management strategies for maintaining strong, productive colonies. Young, healthy queens support vigorous brood production, improve colony performance, and maximize the quality and quantity of hive products. Whether you are a beginner or an experienced beekeeper, introducing a new queen with a queen cage and candy plug is an effective method for restoring and maintaining a thriving colony.
How to Identify a Honeybee Colony with Laying Worker Bees
Colonies that have developed laying worker bees display several recognizable signs. While a single symptom does not always confirm the problem, observing multiple indicators together strongly suggests that the colony has become queenless and that worker bees have begun laying eggs. When you notice two or more of these warning signs, perform a thorough hive inspection to confirm the condition before deciding on a course of action.
1. Multiple Eggs in a Single Brood Cell
One of the most reliable signs of laying worker bees is the presence of multiple eggs in individual brood cells. Newly mated queens occasionally lay more than one egg per cell while they are still adjusting to egg laying, but they quickly correct this behavior. If multiple eggs continue to appear throughout the brood nest, laying workers are the most likely cause.
2. A Missing Queen
Repeatedly failing to find the queen during several consecutive hive inspections is another important warning sign. Although queens can sometimes be difficult to locate, a prolonged absence—combined with other symptoms—may indicate that the colony has become queenless. Marking each queen in your apiary makes future inspections faster and greatly improves your ability to detect queen loss.
3. Eggs Attached to the Sides of Brood Cells
The placement of eggs inside brood cells can also reveal whether worker bees are laying. A healthy queen deposits each egg neatly at the bottom center of the cell. Laying workers, however, often place eggs along the sides of the cell because their shorter abdomens prevent them from reaching the bottom. They may even lay eggs in cells that already contain pollen or honey.
4. Excessive and Spotty Drone Brood
Large amounts of drone brood, especially when scattered irregularly throughout the hive, are another strong indication of laying workers. Because worker bees can lay only unfertilized eggs, nearly all of their offspring develop into drones. As more workers begin laying eggs, the number of drone cells increases dramatically before eventually declining as the colony’s worker population diminishes.
Spotty brood patterns occur because laying workers often remove or destroy eggs laid by other workers. This competition leaves numerous empty cells scattered among capped drone brood, creating an uneven and irregular brood pattern.
What Does Drone Brood Look Like?
In colonies that build natural comb without foundation, drone cells are noticeably larger than worker cells. This difference in cell size makes it easier to distinguish drone brood from worker brood.
In a colony with laying workers, drones are frequently raised in cells that were originally intended for worker bees. Because the developing drones are too large for these smaller cells, the capped brood appears unusually raised and uneven, providing another useful clue that laying workers are present.
Drone brood cappings are characteristically rounded and protrude well beyond the comb surface, giving them a bullet-shaped appearance. Many beekeepers compare these raised cappings to the eraser on the end of a pencil, making them easy to recognize during hive inspections.
How to Save a Colony with Laying Worker Bees
Although colonies with laying workers are difficult to rescue, several management techniques can improve the chances of recovery. Each method has its own advantages, limitations, and level of risk. Regardless of the approach you choose, the ultimate objective is to restore the colony with a healthy, fertile queen that can resume normal brood production.
1. Combine the Colony with a Queenright Colony
One of the most effective methods is to combine the affected colony with a strong queenright colony. The queen’s pheromones, together with the brood pheromones from developing larvae, suppress the egg-laying behavior of worker bees. The receiving colony should be vigorous enough to absorb the additional bees without putting its queen at risk.
To reduce the possibility of laying workers attacking the resident queen, divide the affected colony into several smaller groups and merge each group with a different queenright colony if possible. Using a double-screen divider also provides added protection by allowing pheromones to circulate while preventing direct contact with the queen. Leave the divider in place for approximately three weeks before removing it.
2. Remove the Nurse Bees
Another commonly used method is to shake all the bees from the hive at least 100 metres away from the apiary. Most laying workers are young nurse bees that have never made orientation flights and therefore cannot find their way back to the hive. Experienced foragers, however, will return to the colony and are generally more willing to accept a newly introduced queen.
The nurse bees left behind eventually die, eliminating the majority of the laying workers and allowing the remaining colony to recover more easily after requeening.
3. Add Frames of Healthy Brood
Introducing brood frames from a healthy colony is another effective strategy. The developing brood releases pheromones that gradually suppress ovary development in laying workers. Since the condition develops over several weeks, it also takes time for these pheromones to reverse it.
Fresh brood also gives the colony an opportunity to rear its own replacement queen. For the best results, provide frames containing larvae that are less than one day old. Repeat the process every five to seven days for approximately three weeks, or until the colony begins raising queen cells.
The appearance of supersedure or emergency queen cells on the introduced brood frames indicates that the colony is preparing to produce a new queen. Even if it ultimately fails to rear one successfully, the colony is usually much more receptive to accepting a purchased queen after this period.
Can Every Colony with Laying Workers Be Saved?
Unfortunately, not every colony affected by laying workers can be restored. Colonies that have remained queenless for several weeks often contain so many laying workers that successful requeening becomes extremely difficult. Despite your best efforts, these colonies may continue to decline.
When recovery is no longer practical, determine why the colony became queenless and take steps to prevent the same situation in the future. Clean and prepare the hive, then establish a healthy new colony with a productive queen.
Although abandoning an unrecoverable colony may seem harsh, it often prevents unnecessary losses elsewhere in your apiary. Using large amounts of brood, bees, and resources from healthy colonies in repeated rescue attempts can weaken those colonies without guaranteeing success.
Conclusion
Laying worker bees are a clear indication that a honeybee colony has lost its normal reproductive balance. In most cases, the underlying cause is the absence or failure of the queen, allowing worker bees to begin laying unfertilized eggs that develop only into drones. Without intervention, the colony will gradually lose its worker population and eventually collapse.
Early detection gives you the best chance of saving the colony. Whether you choose to introduce a new queen, supply frames of fresh brood, combine the colony with a queenright hive, or use another proven management technique, prompt action is essential. By understanding the causes, recognizing the warning signs, and applying the appropriate corrective measures, you can maintain healthier, more productive honeybee colonies throughout your beekeeping operation.