Reference for Bava Metzia 205:2

שכיר הוא דרמו רבנן שבועה עליה משום דבעל הבית טרוד בפועליו אבל הכא שוכר מהימן בשבועה

Thus, it is only the employee whom the Rabbis subjected to an oath, because the employer is occupied with his labourers. But here, the tenant is believed on oath.<span class="x" onmousemove="('comment',' As is usually the case, though it is the day on which the term expires. ');">²</span>

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