Akademik

работа не медведь, в лес не уйдет
РАБОТА <ДЕЛО> НЕ ВОЛК <НЕ МЕДВЕДЬ>, В ЛЕС НЕ УЙДЕТ <НЕ УБЕЖИТ>
[saying]
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the work in question (or any work) is not so urgent that it cannot be put off:
- the work isn't going anywhere;
- the work will still be there (tomorrow);
- [in limited contexts] don't do today what you can put off till tomorrow.

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.