Cows from two commercial dairy farms were studied to determine how lameness effects behaviour and milk production. Pens that were far from the milking parlour were used. Locomotion scores were given to each cow within the test pens. The cows were colour marked based on the severity of lameness. Return time from the milking parlour, whether the cows were standing or lying, and milk production/composition were recorded. The results indicated that the percentage of cows lying increased at an increasing rate, distance from the pen entrance was highest in intermediate locomotion score groups, return time tended to increase linearly, and milk and protein production decreased linearly as the locomotion score groups increased. A second experiment showed that the percentage of cows lying increased linearly, distance from the pen entrance decreased at an increasing rate and return time increased at an increasing rate, as locomotion score groups increased. Cows in the farthest pen from the milking parlour were lying the most, distance from the pen entrance decreased at an increasing rate, and cows return time increased as pen distance from the milking parlour increased. A higher locomotion score (greater lameness) and a greater distance from the milking parlour were found to have negative impacts on behaviour and productivity. However, the authors would not recommend that lame cows be housed in pens that are closer to the milking parlour, because they did not find interactions between locomotion score and pen distance.