Where I work, temporary agency staff are paid less than full-time staff to do the same job. Is this allowed?

No, but there are exceptions.  

The Agency Workers Regulations say that after 12 weeks on an assignment in the same role for the same hirer, temporary agency workers are entitled to the same pay, holidays and working time as a full-time equivalent doing the same job.

However, the temporary agency workers at your workplace may have signed agreements known as 'Swedish derogation' contracts. This is a loophole in the legislation which is being used by some employers to avoid the obligation to pay equal pay. Speak to your union rep to find out the position.

The TUC has lodged a formal complaint with the European Commission about the UK’s failure to implement the Agency Workers Directive due to widespread adoption by employers of Swedish derogation-style contracts.

Note: This content is provided as general background information and should not be taken as legal advice or financial advice for your particular situation. Make sure to get individual advice on your case from your union, a source on our free help page or an independent financial advisor before taking any action.