Sarah didn’t have an employment contract when she started.
First things first this is actually illegal now - in 2020, the UK government made it a legal requirement to have these contracts in place when an employee begins their job role.
Sarah came across a huge issue when working with the employer after a few years and was sadly fired.
Sarah took this to the employment tribunal. Not only does Sarah have a case for unfair dismissal (which puts the employer in the💩) because proper procedure wasn’t followed when she was let go, but the employer is also having their wrists slapped by the tribunal for not giving her a contract, and they've now created a situation that causes stress and financial hardship for Sarah, the employers business and for the employer...not good for their wallet or reputation.