I want a trigger/condition that if Spent time is zero

[baqir.ali]

I want a trigger/condition that if Spent time is zero it that task should not able to mark as done OR user should get an email that you did not log your work

[Ivan Lima]

@baqir.ali, you can follow the steps at https://confluence.atlassian.com/jirakb/how-to-get-total-time-logged-into-an-issue-using-automation-for-jira-1115672355.html to create your automation based on time spent.