Oliver Weiss Partner

Photograph of Oliver Weiss

Contact Details

Oliver heads up the London Employment, Pensions & Benefits and Immigration Team. He advises both employers and employees in connection with various contentious and non-contentious employment issues. He also provides commercial advice to staffing companies about a range of employment and commercial issues which arise within the recruitment supply chain.

Main areas of practice

His expertise includes issues arising from the use of social media in the workplace, complex employment status and discrimination claims in the employment tribunal as well as High Court claims involving the enforcement of restrictive covenants relating to unfair competition and confidentiality.


His clients range from large multinational plcs to medium and small enterprises. Many of Oliver’s clients are in the recruitment industry, as well as the IT, charities and retail and leisure sectors.

Significant experience

Recruitment sector group: Oliver has a particular expertise in the recruitment sector and leads the firm's recruitment sector group. He regularly presents at industry events, such as those organised by the Association of Professional Staffing Companies (APSCo) and has experience of the various commercial issues arising within the recruitment supply chain including issues relating to umbrella companies and atypical working arrangements.

Employment: He advises staffing companies and umbrella companies, as well as end user clients of staffing services, in relation to a range of employment and commercial matters such as employment status and TUPE.

He has advised on complex Employment Tribunal matters, such as discrimination and status, as well as matters involving the breach of covenants and misuse of confidential information by former employees. He has advised on complex and high value employment status cases involving HMRC and the GLA.

Other expertise

Articles/seminars: Regular speaker at seminars and contributor to legal and industry publications.

Oliver is a fluent German and Dutch speaker.


Articles by Oliver

Writing references – case clarifies reference writers' duties

Legal update

The writing of references has long been a thorny topic in employment law and so the recent case of Hincks v Sense Network Limited which identifies 'common features' of the duties of a reference writer is important for those involved in giving references.

The Criminal Finances Act – what is it and why does it matter?


The legislation creates a new corporate criminal offence of failure to prevent tax evasion, but how does this impact on HR?

Non-compete clause unenforceable as it included a restriction on holding a minor shareholding in a competing business


Restrictive covenants are a useful tool for employers to protect their competitive edge and to reduce the risk of 'star employees' leaving to join competitors.However, failure to draft them carefully can leave both employer and employee in limbo.

Related Knowledge & Resources

How to protect against misuse of commercially-sensitive information

Protecting trade secrets and confidential information is crucial and what steps can employers take to prevent staff from misusing commercially-sensitive information?

References: What you need to know

When either providing or asking for a reference it's important to consider the key points made by the new Acas guidance.

The "after party" – could employers be liable for what goes on?

With employers planning Christmas parties, or indeed any kind of "works do", we look at a case where the employer was held vicariously liable for an employee's actions when those at the office party moved on to another venue where a fight broke out.

Guide: Our workplace mediation service

Do you have conflict in the workplace that takes up your valuable time and has a damaging effect on team performance?

Immigration Compliance Audit Service

Blake Morgan is one of the few larger law firms that offer an immigration compliance audit service. We are well placed to do so, drawing on our immigration and commercial expertise.