The Best Companies Guide is based on a three star accreditation system. The specific cut-off points for One, Two, and Three Star Accreditation remain constant year on year so any company achieving the required Best Companies Index (BCI) score will always be accredited. The BCI score applies equally to organisations of all sizes.
With The Sunday Times 100 Best Companies To Work For list, companies within the UK and Northern Ireland are able to enter into categories dependent on their size as follows:
- Best Small Companies: 50 - 249 employees
- Best Mid-sized Companies: 250 - 4,999 employees
- Best Big Companies: 5000+ employees
The Sunday Times 100 Best Companies To Work For list has a massive impact at the time of publication, whereas the Best Companies Guide is a constant, year-round reminder of an organisation's status of being an exceptional place to work.