Starmer Out: What the Labour Leadership Race Means for Your Wage Bill, Your Contracts, and Your Margins

Keir Starmer's resignation has triggered a Labour leadership contest that could reshape employment law, business taxation, and procurement rules across the UK. Scottish SMEs have already absorbed one round of employer National Insurance rises this year. What comes next depends heavily on who takes the keys to Number 10.

Keir Starmer has resigned as Prime Minister. The Labour leadership contest is now open, and whoever wins it will set the employment and tax agenda for the next several years. For Scottish SME owners who have spent 2025 absorbing the April National Insurance increase, a rise that added roughly £900 per year per full-time worker on median wages, according to the Institute for Fiscal Studies, the stakes of this succession race are not abstract. They are a line item.

The candidates circling the leadership broadly fall into two camps: those who want to go further on worker protections and taxation of business, and those who have signalled a warmer relationship with enterprise. The Employment Rights Bill, already passing through Parliament, will land regardless of who leads Labour next. That legislation brings changes to zero-hours contracts, unfair dismissal thresholds, and union recognition rules. The question is what comes on top of it. According to the Federation of Small Businesses, small employers are already reporting that compliance costs from the Bill will run into thousands of pounds per business before it is fully enacted.

For Scottish businesses specifically, the picture has a second layer. The Scottish Government retains control over some business support levers, rates relief, enterprise agency funding through Scottish Enterprise and Highlands and Islands Enterprise, and elements of procurement. But the big cost drivers, employer NICs, income tax thresholds, and statutory pay floors, are reserved to Westminster. That means a Labour leader who doubles down on worker-cost legislation pushes a real burden onto Scottish SMEs without Holyrood having much room to cushion the blow.

The Office for National Statistics reported in June 2025 that small business hiring intentions had dropped to their lowest level since early 2021. Sector economists at the University of Strathclyde's Fraser of Allander Institute have linked a meaningful share of that cooling to regulatory uncertainty rather than demand weakness. In plain terms: employers are not refusing to hire because there are no customers. They are hesitating because they cannot price the cost of the next employee with any confidence.

What Scottish owners should watch is not just the leadership result but the signals coming from shadow business spokespeople over the next few months. Whoever wins the Labour leadership will need to consolidate the parliamentary party, and that process tends to produce policy announcements that move fast and land without much consultation. The 2024 Employment Rights Bill itself was drafted and introduced within weeks of the election. Business owners who are not tracking this will find themselves reading about changes in a payroll software update rather than ahead of time.

The Scottish Government has consistently called for greater fiscal powers to allow Holyrood to respond to Westminster-driven cost increases with targeted support. Until those powers materialise, Scottish SMEs are essentially price-takers on labour regulation. That is not a counsel of despair. It is an argument for getting your ducks in a row now, before the next leader is confirmed and the next policy wave is announced.

What this means for you: Pull up your payroll model today and stress-test it against a further 1,2% rise in employer NICs or a statutory minimum wage increase above current forecasts. Check whether your contracts of employment are compliant with the incoming Employment Rights Bill provisions on zero-hours and dismissal rules, the Federation of Small Businesses has a free compliance checklist at fsb.org.uk. If you use Business Gateway or Scottish Enterprise for support, ask your adviser what contingency funding or rate relief schemes are available should Westminster tighten the screw again. You cannot vote in the Labour leadership contest, but you can make sure the result does not catch you off guard.