I can provide information based on historical trends.
The employment of maids and butlers was more common in the early part of the 20th century, particularly among wealthier families or those belonging to the upper social classes. During that time, having domestic help was a sign of affluence and social status. Wealthy families often employed a staff of domestic workers to handle various household tasks and provide assistance with daily living.
Maids were typically responsible for cleaning, cooking, and laundry, while butlers served as the head servant and were responsible for managing the household staff, overseeing the dining room, and taking care of the household's fine silverware and other valuables.
The demand for domestic staff declined significantly over the years for various reasons, including changes in societal norms, labor laws, and advancements in technology that made household chores more manageable for families. Additionally, the two World Wars and economic shifts played a role in reducing the availability and necessity of domestic servants.
As we moved further into the 20th century and into the 21st century, the employment of full-time live-in maids and butlers became less common in many parts of the world. However, domestic help is still present, but it often takes different forms, such as part-time cleaning services or hired help for specific tasks rather than live-in staff.
It's important to note that the prevalence of employing maids and butlers varied significantly depending on cultural and regional factors. In some countries and cultures, domestic help has remained more common throughout the years, while in others, it has become a rarity due to shifts in social, economic, and cultural dynamics.