An organisation's role structure is its silent architecture: it defines who decides what, to whom each person answers and how information flows. A poorly designed org chart creates duplication, bottlenecks and conflicts of responsibility that no motivation plan can fix. This article explains the models of organisational structure, how to build a competency map, which standards and legal obligations frame people management in Spain and the European Union, and the mistakes that turn a well-intentioned organisational redesign into a problem.
Models of organisational structure
The functional structure groups people by speciality (finance, sales, production, human resources). It favours technical depth and economies of scale, but tends to create silos that hinder coordination between departments. The divisional structure organises by product, market or geography, giving autonomy and customer focus at the cost of duplicating support functions. The matrix structure combines both axes—a professional reports at once to a functional manager and a project manager—which makes better use of talent but requires clear priority rules to avoid the conflict of dual reporting lines.
In contrast to these hierarchical models, flat structures and agile teams reduce management layers and empower autonomous cross-functional teams. They work well in fast-changing, knowledge-intensive environments, but do not scale without a minimum of governance: the total absence of hierarchy is not flatness, it is ambiguity. The choice of model is not ideological; it depends on the size, strategy and pace of the environment of each organisation.
From the position to the role: defining functions
A well-crafted job description is the basic unit of a healthy structure. It should capture the mission of the position, the key responsibilities, the decisions it can make autonomously, those it escalates, and the required competencies. It is worth distinguishing the position (the formal slot) from the role (the part played in a context), because the same person performs several roles and the same role is shared by several people in modern structures.
A practical tool for clarifying who does what is the RACI matrix, which for each task identifies who is Responsible for executing it, who is Accountable (a single person), who is Consulted and who is Informed. Applying RACI to key processes eliminates most conflicts of responsibility before they appear, because it forces you to make explicit what used to remain implicit.
Span of control and hierarchical levels
Two silent parameters shape any org chart: the span of control (how many people report directly to a manager) and the number of hierarchical levels. A span of control that is too narrow—three or four reports per manager—multiplies levels, slows decisions and inflates the structure with unproductive management. A span that is too wide—twenty reports—dilutes guidance and overwhelms the manager. There is no magic number: the optimal span depends on the complexity of the work, the maturity of the team and the degree of task standardisation. Routine, homogeneous work allows wide spans; knowledge work that is changing and loosely structured requires narrower spans.
Reducing hierarchical levels (flattening the organisation) brings management closer to operations and speeds up information flow, but it only works if accompanied by real delegation of decisions. Removing layers without ceding autonomy produces the worst of both worlds: the same centralisation with fewer people to manage it. The redesign of levels must therefore start from which decisions can and should be taken at each point of the structure.
The competency map
A competency model translates strategy into observable behaviours. It usually distinguishes technical competencies (knowledge and skills specific to the position), transversal ones (communication, teamwork, results orientation) and leadership ones (vision, developing people, decision-making). Each competency is defined by levels, which allows objective assessment, the detection of gaps and the planning of training. European frameworks such as ESCO (the European classification of skills, competences and occupations) offer a common vocabulary that makes it easier to compare profiles across countries and connect training with the real occupations of the market.
Comparison of organisational structures
| Criterion | Functional | Divisional | Matrix | Flat / agile |
|---|---|---|---|---|
| Technical specialisation | High | Medium | High | Medium |
| Customer focus | Low | High | Medium-high | High |
| Cross-area coordination | Hard (silos) | Medium | High | High |
| Clarity of command | High | High | Low (dual boss) | Variable |
| Best suited for | Stable SMEs | Multi-product | Complex projects | Changing environments |
Key roles within the Human Resources function
The people function itself has evolved from an administrative department into a strategic partner. The reference model distinguishes several complementary roles. The HR Business Partner works alongside the business areas, translating their strategy into people plans; they do not handle payroll, but advise on structure, talent and performance. Centres of expertise concentrate specialised knowledge in recruitment, compensation, training or labour relations. Shared services resolve transactional operations (onboarding, contracts, time management) with efficiency and scale.
To these traditional roles are added more recent profiles: People Analytics, which provides quantitative evidence on turnover, engagement and the effectiveness of policies; and the leads for culture and employee experience, who look after the person's complete journey within the organisation. Clearly defining which decisions each of these roles makes—again, with a responsibility matrix—prevents the people function from internally reproducing the ambiguity it aims to correct in the rest of the company.
Legal framework for people management in Spain
Role design does not happen in a legal vacuum. The Workers' Statute regulates professional classification by groups, functional mobility and the conditions of the employment relationship; any substantial change of functions must respect its limits. Equality and non-discrimination are reinforced obligations: companies above a certain size must have an equality plan and apply pay transparency, in line with the European Pay Transparency Directive that strengthens the principle of equal pay for work of equal value. The management of employee data—appraisals, time records, health data—is subject to the GDPR and the LOPDGDD, with principles of minimisation and purpose, and with specific safeguards for time-and-attendance control and video surveillance. Ignoring this framework when redesigning a structure exposes the organisation to penalties and litigation.
Phased implementation of an organisational redesign
A well-governed redesign follows this sequence: (1) start from the strategy and key processes, not from the current org chart, so as not to perpetuate dysfunctions; (2) map the processes and apply RACI to clarify decisions and responsibilities; (3) define the competency model and describe the positions with their levels; (4) design the new structure and validate that it respects the legal framework (professional classification, equality, data protection); (5) manage the change with transparent communication, listening and support, because every reorganisation generates uncertainty; and (6) measure the impact with indicators of turnover, climate and process efficiency, adjusting whatever does not work.
Common mistakes to avoid
The first is drawing the org chart before the processes: the structure must serve the workflow, not the other way round. The second is copying another company's model without considering your own size, strategy or culture. The third is implementing a matrix with no priority rules, which leaves people with two bosses and no clear decision. The fourth is forgetting change management, announcing the new structure by email and expecting it to be adopted on its own. And the fifth is neglecting legal compliance: modifying substantial functions, pay or controls without respecting the Workers' Statute and the GDPR turns an organisational improvement into a legal risk.
Frequently asked questions
Which organisational structure is the best?
There is no universally optimal one. The functional structure fits stable SMEs, the divisional one fits multi-product or multi-market companies, the matrix fits organisations running complex projects, and flat structures fit fast-changing environments. The choice depends on the strategy, the size and the pace of the environment.
What is a RACI matrix for?
To clarify, for each task or decision, who executes it, who is accountable, who is consulted and who is informed. It is one of the most effective tools for eliminating conflicts of responsibility and duplication.
How does a position differ from a role?
The position is the formal slot in the org chart; the role is the part a person plays in a specific context. A person can hold a position and perform several roles, and the same role can be split among several people.
Which legal obligations should I review when redesigning the structure?
Mainly the professional classification and the limits on functional mobility in the Workers' Statute, the obligations on equality and pay transparency, and the processing of employee data in accordance with the GDPR and the LOPDGDD.
Conclusion
A role structure is not a drawing of boxes and lines, but the translation of strategy into clearly distributed decisions. The redesign that works starts from processes and competencies, makes responsibilities explicit with tools such as RACI, scrupulously respects the labour and data-protection framework, and is accompanied by honest change management. The real indicator of a good structure is not how elegant the org chart looks, but that each person knows what they decide, to whom they answer and how they contribute to the result, with no grey areas or contradictory dual reporting. At Summum Marketing we approach organisational design from real processes and the applicable legal framework, because a company is not put in order with a pretty org chart, but with well-defined roles that people understand and own.