How many workers did it really take to build a medieval cathedral? Evidence from Girona Cathedral suggests the answer was far fewer than most people would imagine.
By Lorris Chevalier
Popular imagination, shaped in large part by nineteenth-century historians such as Jules Michelet, often depicts cathedral building sites as vast spaces teeming with hundreds of labourers. These great monuments, which have endured for centuries, seem to demand an army of workers to raise their walls and vaults. Yet the historical evidence tells a very different story. Far from being crowded with labourers, medieval cathedral worksites were often surprisingly small. The construction of the cathedral in Girona provides a particularly illuminating example.
The Case of Girona
The main façade of the Girona Cathedral – photo by Fernando / Wikimedia Commons
The most valuable sources for studying the workforce of a medieval cathedral are the financial accounts kept by the fabrique, the administrative body responsible for managing the building works. In the case of Girona Cathedral, these records are exceptionally detailed. They provide weekly lists of the workers employed on the site throughout the fifteenth century.
These accounts allow historians to calculate several kinds of figures:
the total number of workers recorded over time,
extrapolated annual totals when only partial accounts survive,
and most importantly, the average number of workers employed per year, standardised over fifty-two weeks.
Only the labourers directly involved in construction or finishing work were counted. Suppliers of raw materials – quarrymen, merchants, and others – were excluded, as they did not work on the building site itself.
A Surprisingly Small Workforce
The nave of the Girona Cathedral – photo by Fernando / Wikimedia Commons
The results reveal that cathedral construction did not require massive numbers of workers. In fact, the size of the workforce was tightly controlled and governed by economic considerations. Workers were hired only when there was a clear need for their labour. As a result, the site rarely carried surplus labour.
Across the fifteenth century, the average workforce was only about ten men per year. Even during periods of intense activity, the numbers remained modest. At most, approximately thirty workers were involved in building the first two bays of the cathedral’s great single nave, while only around fifteen were required to complete the closure of the new nave later in the century.
These figures challenge the romantic image of crowded medieval building sites. The construction of one of the largest Gothic naves in Europe was managed by a relatively small and carefully organised team.
Phases of Construction
Construction of the Temple of Jerusalem by Jean Fouquet – BnF MS Français 247, fol. 163
The size of the workforce varied according to the stage of construction.
1402–1411: Moderate activity
Work began cautiously, including the construction of a new lodge and the demolition of earlier structural elements. The workforce remained small while the city authorities debated the cathedral’s final design.
1416–1426: The great building campaign
After the decision was taken to construct the cathedral with a single nave, activity increased dramatically. Old pillars were demolished, scaffolding erected, and the first vaults constructed. Gargoyles were installed and chapels built. During this decade the workforce reached its highest levels.
1430–1445: A period of consolidation
Following the intense construction phase, work slowed. Efforts focused on vaulting, roofing, and secondary structures such as workshops and schools. Employment stabilised at about four to five workers on average.
1446–1450: Renewed activity
Construction accelerated again as the new nave was closed near the central portal. Work also took place in the chapels and roof structures.
1452–1462: Gradual slowdown
Major construction ended, and the site turned mainly to maintenance and finishing work.
1472–1498: Repairs and minor works
Following wartime damage, small teams repaired the roofs and strengthened structures. In some years the site employed only two or three workers.
The Cathedral and the City’s Workforce
When these figures are compared with the total number of construction workers living in the city, the cathedral’s impact becomes clearer.
Tax records indicate that around:
72 building workers lived in Girona in 1414,
64 in 1417,
and 57 in 1462.
During the cathedral’s most active years, it could employ more than half of the city’s available building labour. For example, in 1419 up to 41 men worked simultaneously on the site – roughly 64% of Girona’s construction workforce.
In quieter years, however, the cathedral employed only a handful of workers, providing little economic support to the city’s craftsmen.
Skilled and Unskilled Labour
The workforce was divided between skilled artisans and unskilled labourers.
Skilled workers included:
stonecutters and masons,
carpenters,
sculptors and painters,
and carters who owned their own animals for transporting materials.
These workers required specialised training and often belonged to professional guilds.
Unskilled workers included:
labourers (manobres),
porters and general helpers,
apprentices,
and occasionally slaves.
On the cathedral site, skilled artisans usually formed the majority. In six out of eight key years studied, they outnumbered unskilled labourers. During technically complex phases, such as vault construction, skilled craftsmen could represent more than 80% of the workforce.
In simpler tasks, such as wall construction or transport, the number of unskilled workers increased.
An Efficient Organisation
The construction of a church depicted in a 14th-century manuscript – Ms. Ludwig XI 7 (83.MN.126), fol. 56
The typical ratio across many worksites was roughly one labourer for every two skilled craftsmen. This balance ensured both technical competence and economic efficiency. A minimum of about 40% skilled workers seems to have been necessary to supervise and organise the work effectively.
Overall, the ideal medieval construction team appears to have consisted of roughly:
40% skilled craftsmen,
40% unskilled labourers,
20% flexible workers, whose numbers varied depending on the technical challenges of the project.
Labour Mobility
One final question concerns whether workers moved easily between different building projects in the city. Evidence suggests that most craftsmen worked on only one site at a time. In one comparison between the cathedral works and city fortification projects in 1412, over 84% of artisans appeared on only a single site, while only about 15% worked on both.
This suggests that labour mobility existed but was limited. Large projects such as the cathedral could temporarily dominate the local labour market, drawing in a substantial proportion of the city’s craftsmen.
The construction of a medieval cathedral was not the mass enterprise often imagined. At Girona, one of the most ambitious Gothic projects in Europe, the building site usually employed only a small and carefully managed workforce.
Even during its busiest years, fewer than fifty men were needed. Over the long term, the site employed an average of around ten workers. These figures reveal a construction process driven less by sheer manpower than by skilled craftsmanship, careful planning, and long periods of intermittent work.
Dr Lorris Chevalier, who has a Ph.D. in medieval literature, is a historical advisor for movies, including The Last Duel and Napoleon. Click here to view his website.
How many workers did it really take to build a medieval cathedral? Evidence from Girona Cathedral suggests the answer was far fewer than most people would imagine.
By Lorris Chevalier
Popular imagination, shaped in large part by nineteenth-century historians such as Jules Michelet, often depicts cathedral building sites as vast spaces teeming with hundreds of labourers. These great monuments, which have endured for centuries, seem to demand an army of workers to raise their walls and vaults. Yet the historical evidence tells a very different story. Far from being crowded with labourers, medieval cathedral worksites were often surprisingly small. The construction of the cathedral in Girona provides a particularly illuminating example.
The Case of Girona
The most valuable sources for studying the workforce of a medieval cathedral are the financial accounts kept by the fabrique, the administrative body responsible for managing the building works. In the case of Girona Cathedral, these records are exceptionally detailed. They provide weekly lists of the workers employed on the site throughout the fifteenth century.
These accounts allow historians to calculate several kinds of figures:
Only the labourers directly involved in construction or finishing work were counted. Suppliers of raw materials – quarrymen, merchants, and others – were excluded, as they did not work on the building site itself.
A Surprisingly Small Workforce
The results reveal that cathedral construction did not require massive numbers of workers. In fact, the size of the workforce was tightly controlled and governed by economic considerations. Workers were hired only when there was a clear need for their labour. As a result, the site rarely carried surplus labour.
Across the fifteenth century, the average workforce was only about ten men per year. Even during periods of intense activity, the numbers remained modest. At most, approximately thirty workers were involved in building the first two bays of the cathedral’s great single nave, while only around fifteen were required to complete the closure of the new nave later in the century.
These figures challenge the romantic image of crowded medieval building sites. The construction of one of the largest Gothic naves in Europe was managed by a relatively small and carefully organised team.
Phases of Construction
The size of the workforce varied according to the stage of construction.
1402–1411: Moderate activity
Work began cautiously, including the construction of a new lodge and the demolition of earlier structural elements. The workforce remained small while the city authorities debated the cathedral’s final design.
1416–1426: The great building campaign
After the decision was taken to construct the cathedral with a single nave, activity increased dramatically. Old pillars were demolished, scaffolding erected, and the first vaults constructed. Gargoyles were installed and chapels built. During this decade the workforce reached its highest levels.
1430–1445: A period of consolidation
Following the intense construction phase, work slowed. Efforts focused on vaulting, roofing, and secondary structures such as workshops and schools. Employment stabilised at about four to five workers on average.
1446–1450: Renewed activity
Construction accelerated again as the new nave was closed near the central portal. Work also took place in the chapels and roof structures.
1452–1462: Gradual slowdown
Major construction ended, and the site turned mainly to maintenance and finishing work.
1472–1498: Repairs and minor works
Following wartime damage, small teams repaired the roofs and strengthened structures. In some years the site employed only two or three workers.
The Cathedral and the City’s Workforce
When these figures are compared with the total number of construction workers living in the city, the cathedral’s impact becomes clearer.
Tax records indicate that around:
During the cathedral’s most active years, it could employ more than half of the city’s available building labour. For example, in 1419 up to 41 men worked simultaneously on the site – roughly 64% of Girona’s construction workforce.
In quieter years, however, the cathedral employed only a handful of workers, providing little economic support to the city’s craftsmen.
Skilled and Unskilled Labour
The workforce was divided between skilled artisans and unskilled labourers.
Skilled workers included:
These workers required specialised training and often belonged to professional guilds.
Unskilled workers included:
On the cathedral site, skilled artisans usually formed the majority. In six out of eight key years studied, they outnumbered unskilled labourers. During technically complex phases, such as vault construction, skilled craftsmen could represent more than 80% of the workforce.
In simpler tasks, such as wall construction or transport, the number of unskilled workers increased.
An Efficient Organisation
The typical ratio across many worksites was roughly one labourer for every two skilled craftsmen. This balance ensured both technical competence and economic efficiency. A minimum of about 40% skilled workers seems to have been necessary to supervise and organise the work effectively.
Overall, the ideal medieval construction team appears to have consisted of roughly:
Labour Mobility
One final question concerns whether workers moved easily between different building projects in the city. Evidence suggests that most craftsmen worked on only one site at a time. In one comparison between the cathedral works and city fortification projects in 1412, over 84% of artisans appeared on only a single site, while only about 15% worked on both.
This suggests that labour mobility existed but was limited. Large projects such as the cathedral could temporarily dominate the local labour market, drawing in a substantial proportion of the city’s craftsmen.
The construction of a medieval cathedral was not the mass enterprise often imagined. At Girona, one of the most ambitious Gothic projects in Europe, the building site usually employed only a small and carefully managed workforce.
Even during its busiest years, fewer than fifty men were needed. Over the long term, the site employed an average of around ten workers. These figures reveal a construction process driven less by sheer manpower than by skilled craftsmanship, careful planning, and long periods of intermittent work.
Dr Lorris Chevalier, who has a Ph.D. in medieval literature, is a historical advisor for movies, including The Last Duel and Napoleon. Click here to view his website.
Click here to read more from Lorris Chevalier
Further Readings:
Victor, Sandrine. ‘Chapitre II. Les ouvriers sur le chantier’. La construction et les métiers de la construction à Gérone au XVe siècle, Presses universitaires du Midi, 2008, .
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