Worth somebody’s while
Definition 1 of 1
Pro Tip 1/3Reward Expectation
Implies that someone might receive direct benefits or compensation for their actions. 
Help me move and I'll make it worth your while.
Pro Tip 2/3Encouragement
Used to motivate someone to make an effort by suggesting a positive outcome. 
Studying now will be worth your while when exam results come out.
Pro Tip 3/3Subtle Persuasion
Mildly persuades someone to agree to a request or proposal, hinting at an advantage. 
Taking this extra shift could be worth your while.