make something worth someone's while
US /meɪk ˈsʌmθɪŋ wɜrθ ˈsʌmwʌnz waɪl/
UK /meɪk ˈsʌmθɪŋ wɜrθ ˈsʌmwʌnz waɪl/

1.
fazer valer a pena, recompensar
to provide someone with enough money or other benefits to make an effort or task seem worthwhile
:
•
If you help me move, I'll make it worth your while.
Se você me ajudar a mudar, eu vou fazer valer a pena para você.
•
The company offered a bonus to make the extra hours worth their employees' while.
A empresa ofereceu um bônus para fazer as horas extras valerem a pena para seus funcionários.