UK supermarket chain Sainsbury's is set to cut 3,000 jobs and close its cafes and certain food counters in response to rising labor costs and reducing margins. The changes include a 20% cut in senior management roles, aimed at simplifying operations and making the business more efficient. Although Sainsbury's reported strong holiday sales, the CEO cited a challenging cost environment and the need for tough choices due to rising National Insurance contributions. The company plans to offer support packages to affected employees and redeploy staff where possible.