Under what condition can the tenure of welfare staff be extended beyond 45 days?

Under what condition can the tenure of welfare staff be extended beyond 45 days?

ویلفیئر سٹاف کی مدت میں 45 دن سے زیادہ توسیع کس شرط پر کی جا سکتی ہے؟
Explanation

An extension beyond 45 days is allowed only with unavoidable circumstances and solid justification.