Chase up Definition 1 of 2Pro Tip 1/3Business Context Often used at work to refer to resolving or reminding about overdue tasks. I need to chase up the marketing report that was due yesterday. Pro Tip 2/3Task Reminder Implies a nudge to prevent something from being overlooked or delayed further. Don't forget to chase up the team about the project deadline. Pro Tip 3/3Proactive Approach Shows taking initiative to deal with something that's been ignored. She decided to chase up the forgotten invoice before the accounts closed.