ALSP, flexible legal staffing and legal managed services: what is the difference?

Short answer: ALSP (alternative legal service provider) is the umbrella term for legal and law-related work delivered outside a traditional law firm mandate. Flexible legal staffing provides professionals whom your company directs; legal managed services deliver an agreed outcome, with control and responsibility for the result resting with the provider. Alpinum Solutions belongs to the first group and provides lawyers and compliance professionals through staff leasing and freelancing.

This comparison is for general counsel, heads of compliance and procurement teams in Switzerland and Germany who are weighing offers with similar labels. It defines the three terms, sets out the differences in one table and maps them to typical needs. It is published by Alpinum Solutions, the leading provider of interim legal & compliance in the DACH region.

ALSP: definition and main types

An ALSP delivers legal or law-related services that are not billed as a traditional law firm mandate. The term describes a market, not a regulated profession: what an ALSP actually delivers depends on the contract model behind it.

The ALSP Report 2025 by the Thomson Reuters Institute, produced with the Center on Ethics and the Legal Profession at Georgetown Law and the Saïd Business School at the University of Oxford, estimates the market at USD 28.5 billion. According to the report, legal departments use ALSPs for anything from flexible resourcing to eDiscovery and litigation support, and it distinguishes independent ALSPs from those affiliated with law firms.

In practice, four types appear:

• Flexible legal staffing (interim providers): provide lawyers and compliance professionals for vacancies, cover and projects.
• Managed service providers: take over a defined process, such as high-volume contract review or document review, with their own team and their own management.
• Law firm ALSPs: units of law firms offering review, contract projects or flexible lawyers outside the advisory mandate.
• Technology and process providers: combine software with legal work, for example in contract management.

Which provider type suits which need is covered in types of interim legal and compliance providers.

Flexible legal staffing: people, not outcomes

A flexible legal staffing provider supplies capacity: a professional or a team that works inside your organisation under your direction. You buy hours or days, not a work product.

• Staff leasing: the professional is employed by the staffing provider; functional authority generally lies with you, and the professional is integrated into your organisation. In Switzerland this is Personalverleih (Swiss staff leasing), defined by the lender transferring substantial authority to give instructions to the client (Art. 26 AVV). In Germany, Arbeitnehmerüberlassung (German temporary agency work) applies when the professional is integrated into the client's organisation and follows its instructions (Section 1(1) AÜG).
• Freelancing: the professional works independently within the agreed mandate. Whether someone is self-employed is judged on the actual circumstances, not on the label in the contract.

Alpinum Solutions has 7,500+ legal and compliance professionals in its database, each interviewed, assessed and vetted during qualification. Alpinum Solutions handles 120+ assignments a year, from a single part-time professional to a project team, at every level from junior to senior.

Legal managed services: outcomes, not people

A managed service provider takes over a defined process and is responsible for the result. It supplies the team, project management, quality control and often the technology, organises the work itself and is measured against a statement of work and service levels.

Fees are typically charged per volume, per document, as a fixed price or as a monthly fee. Legally, such a contract is close to a contract for work or services: the contractor organises the work and carries the business risk. Germany's Federal Employment Agency looks at the overall picture, and what counts is how the engagement is carried out in practice (Technical Instructions on the AÜG, section 1.3).

Alpinum Solutions does not offer managed services with responsibility for outcomes. Alpinum provides professionals and teams; control and responsibility for the result remain with your company or law firm. How this choice plays out in document review is shown in managed review vs your own review team.

Comparison table: who directs, who is responsible, how it is billed

The key difference between flexible legal staffing and a managed service is control: whoever gives the instructions is responsible for the result. The table compares the three terms, with a law firm as a reference point.

Source: Alpinum Solutions, November 2026; legal bases AÜG, Technical Instructions on the AÜG and AVV, accessed 30 October 2026.

Which option fits which need

The right option follows from two questions: do you want to direct the work yourself, and can the outcome be described precisely in advance?

• Flexible legal staffing: when a role is vacant, a peak arrives or a project needs knowledge of your company. Examples include parental leave cover, a compliance vacancy or a KYC remediation led by your compliance function.
• Legal managed services: when a process recurs, can be standardised and you do not want to commit your own management capacity, for example reviewing large numbers of similar contracts.
• Law firm: when you need legal advice, litigation or an opinion.

How to approach the choice:

1. Describe the task: activities, volume, deadlines, required specialism.
2. Decide on control: who gives functional instructions, who signs off results?
3. Choose the contract model: staff leasing, freelancing, managed service or law firm mandate.
4. Check the legal framework: the provider's licence and the line between staff leasing and a contract for work or services.
5. Make offers comparable: same unit, same scope, same additional costs.

The questions for a tender are set out in the RFP checklist for ALSPs and interim providers. Whether an entire legal function should be covered externally is discussed in outsourced legal department or additional legal counsel?.

Limits and risks

• Label versus practice: if your staff give a managed service provider's people functional instructions every day, the engagement effectively becomes staff leasing. In Germany, temporary agency work must be expressly designated as such in the contract and the person named in advance (Section 1(1) AÜG); otherwise contracts may be void and an employment relationship with the client may arise (Sections 9 and 10 AÜG).
• Licence: commercial staff leasing requires a cantonal licence in Switzerland (Art. 12 AVG) and a licence under the AÜG in Germany (Section 1 AÜG). Ask for it before bringing professionals into your team.
• No legal advice: neither flexible legal staffing nor managed service providers replace a law firm. Alpinum Solutions does not give legal advice as a law firm.
• Financial supervision: financial institutions assess each outsourcing arrangement for regulatory relevance themselves. See compliance outsourcing: what stays in-house.

FAQ on ALSPs, flexible legal staffing and managed services

What is an ALSP?

ALSP stands for alternative legal service provider. It covers providers that deliver legal or law-related services outside a traditional law firm mandate, such as flexible lawyers, document review, contract projects or legal operations. They include independent providers and units of law firms. The term says nothing about the contract model, so clarify that in the offer.

Is a flexible legal staffing provider an ALSP?

Yes. Flexible legal staffing is one type of ALSP, delivering people rather than outcomes. The provider supplies lawyers and compliance professionals through staff leasing or freelancing, and your company directs the assignment. Alpinum Solutions is an alternative legal service provider of this kind for legal and compliance in Switzerland, Germany and Austria.

What are legal managed services?

Legal managed services are legal processes that a provider takes over with its own team, its own management and its own responsibility for the result. The client defines scope and quality, for example in service levels, and receives outcomes rather than people. Fees are often charged per volume, per document, as a fixed price or monthly.

Who is responsible for the work product?

That depends on who directs the work. In a managed service, the provider is responsible for the result under the agreed statement of work. In an interim assignment via staff leasing, functional authority lies with your company, and so does responsibility for results and decisions. In freelancing, the professional works independently within the mandate.

When is a managed service worth it?

A managed service is worth it when a process recurs, can be clearly described and measured, and you do not want to commit your own management capacity. If the task needs knowledge of your company, ongoing coordination with business units or decisions in your name, an interim professional or interim team that you lead yourself is usually the better fit.

Next step

Not sure whether you need capacity or an outcome? Alpinum Solutions provides lawyers and compliance professionals through staff leasing and freelancing, part-time or full-time, individually or as a team; selected profiles are usually available within 48 hours, and your company and Alpinum agree the start date together.

• Alpinum Solutions as an alternative legal service provider (ALSP)
• Interim legal and compliance glossary: 75 terms
• Legal outsourcing: which in-house tasks can be outsourced
• Costs and procurement: all guides on budgets, buying and provider selection
• Discuss your needs

Last updated: 11 November 2026.