Employment lawyers have the knowledge and experience to help you to effectively gather all the evidence you need, to support your case.  This is crucial, as your employer will find it difficult to argue against hard evidence.  And that means you are more likely to win, if the claim goes to an employment tribunal hearing.  Documentary evidence, such as meeting notes, e mails and letters can be very persuasive for the employment law tribunal to make a judgement.  A specialist employment lawyer will understand how to position the evidence and case so that you achieve the best result.  You may find the other employment lawyer having difficulty to argue against the evidence.