Need help in writing a report to show the time logged per employee

[Rick Baker]

I need to find a method to view the time each tech spends on a ticket, time spent on certain request types and which customers are consuming the most of my departments time. We are using Jira Service Desk 

[Alexey Matveev]

You can use Jira Rest Api GET /rest/api/2/issue/{issueIdOrKey}. It will return all worklogs for an issue. You can build your report using this data.

https://docs.atlassian.com/software/jira/docs/api/REST/7.6.1/?_ga=2.164410812.2030217466.1525875113-593458345.1525875113#api/2/issue