Hi
I was in a similar situation this time last year, with unpaid wages and expenses. My boss was also bullying me. In the end I had to leave.
I brought my employer to an Employment Tribunal where I had to represent myself, and it was a very difficult experience. Like your sister in law did the payroll, and my ex-employer counterclaimed stating that had total responsibility for the payroll and choose not to pay myself! This was in addition to many other accusations of fraud and wrongdoing.
The Tribunal judged that I suffered constructive/unfair dismissal and ordered unpaid wages to be paid. However the company has ceased trading to avoid paying me, so I spent a lot of time preparing my case, suffered the stress of it all, and have ended up with none of the money coming back to me!
Here are some pointers to consider:
- Go see a local Citizens Advice Bureau (CAB) without delay!

There might be a wait but it will be worth it
- Your sister-in-law can only bring a case in her name for her unpaid wages
- Other employee's can do the same and it is likely that all the cases would be heard at the same time
- It can a costly process whether it be money, time or emotionally. If the directors of the company have a reputation of winding up companies etc but the CAB should be able to point you in the right direction.
-Personally I would suggest your sister-in-law starts looking for another job, it can't be nice working for employer's that treat their staff this way
- The Tribunal will see through lame claims as well as counterclaims, evidence is key. She needs to think about how she can prove her claims, via her contract of employment? previous payslips? etc. How can she prove that she was not responsible for paying herself as her employer is trying to make out.
- If the company directors keep winding up companies reporting them to the DTI might be an option.
- Your sister needs to keep track of conversations with her employer in terms of dates/times and what was said
- From what I understand the Tribunal may only look at the case in relation to your sister-in-law and her current employer. They might not accept evidence about the employers previous performance particularly as each company has a seperate legal entity.
It is an awful situation, no person deserves to be treated like this, but it really does look like the people that employer her have a very poor track record. Please please do go to CAB and see what they suggest.
A year on from my experience I am much less trusting, I joined another company in August of last year and that company did not pay my wages on time for the first two months. I handed in my notice and left. I work for myself freelance and enjoy that! The Tribunal Hearing was a stressful experience but interesting experience but not one I hope to repeat.
Best of luck! Sometimes all we can do when something goes wrong is learn an valuable lesson and move on!