“He has been working his tail off.

Source: https://federalnewsnetwork.com/sports-news/2023/03/booker-bench-lead-suns-past-skidding-jazz-as-ayton-returns/

He has worked his tail off in preparation for the opportunity.

Source: https://calgary.ctvnews.ca/tsn-reports-that-calgary-flames-set-to-name-conroy-gm-1.6408054

He’s a beautiful human being, he works his tail off, he’s a great teammate… Somehow, someway he’s to rebound the basketball… That’s a recurring occurrence with him throughout his career.

Source: https://dailycollegian.com/2023/02/observations-from-umass-mens-basketballs-70-59-loss-to-george-mason/

In Germany, the use of ignite- and coal-powered power stations is expected to tail off significantly by 2025, the watchdog forecast, as solar and wind farms come online.

Source: https://www.japantimes.co.jp/environment/2023/12/16/coal-demand-new-high/

I’ve just been working my tail off to get here.

Source: https://steelersdepot.com/2023/11/ill-take-all-the-reps-i-can-get-cameron-heyward-ready-to-make-up-for-lost-time/