I have recently been offered a full time fixed term contract from January until end of July. My current employer has kindly allowed a type of sabbatical where they reduce my hours to 4 a week with a contract amendment, and in August I will go back to them full time.
What happens with tax for this? My current job will effectively become my 2nd job as it's only 4 hours per week, and the fixed job will be my main job.