they would have fled from those difficult tasks in the next minute after his passing.

It is stated in the Holy Quran:

فَلَمَّا قَضَیْنَا عَلَیْهِ الْمَوْتَ مَا دَلَّهُمْ عَلٰى مَوْتِهٖۤ اِلَّا دَآبَّةُ الْاَرْضِ تَاْكُلُ مِنْسَاَتَهٗۚ-فَلَمَّا خَرَّ تَبَیَّنَتِ الْجِنُّ اَنْ لَّوْ كَانُوْا یَعْلَمُوْنَ الْغَیْبَ مَا لَبِثُوْا فِی الْعَذَابِ الْمُهِیْنِؕ(۱۴)

Then, when We sent the command of death towards him, nothing informed the Jinn about his death except the termite of the earth which was eating his staff. Then, when Sulayman came to the ground, the truth about the Jinn was exposed. If they had known the unseen, so they would not have remained in this disgraceful punishment (of hard labour).

[Kanz-ul-Iman (translation of Quran)] (Part 22, Surah Saba, verse 14)

Sayyiduna Sulayman عَـلَيْـهِ الـسَّـلَام lived till the age of 53, and became a king at the age of 13, thus, he ruled for 40 years. (Khaazin, Surah Saba, under verse 14, vol. 3, p. 520; Madarik, Surah Saba, under verse 14, p. 959, selected)

Sayyiduna Sulayman عَـلَيْـهِ الـسَّـلَام has been mentioned in many Ahadith; just a few Ahadith are being presented here:

Being wary of the Du’a of Sayyiduna Sulayman عَـلَيْـهِ الـسَّـلَام

Sayyiduna Abu Hurayrah رَضِىَ اللّٰهُ عَـنْهُ narrates that the Beloved Prophet  صَلَّى الـلّٰـهُ عَلَيْهِ وَاٰلِهٖ وَسَلَّم said: A rebellious Jinn attacked me last night in order to break my Salah, but Allah Almighty granted me strength over it and I subdued it. Then I intended to tie it to one of the pillars of the Masjid for all to see, however, I remembered the Du’a of my brother Sayyiduna Sulayman عَـلَيْـهِ الـسَّـلَام, ‘O my Lord! Forgive me and grant me such a kingdom which will not be granted to anyone else after me,’ thus, I returned the Jinn after it was unsuccessful. (Bukhari, vol. 2, p. 450, Hadith 3423)