NEC4 ECC: who does what, by when

The main clocks on an unamended NEC4 Engineering and Construction Contract, sorted by whose job it is. Using another form? See time periods by contract, because the subcontract and short forms differ.

Contractor

Step	Clause	Time	The clock starts at
Notify a compensation event (the time bar)	61.3	8 weeks	Date you became aware that the event has happened
Submit a quotation	62.3	3 weeks	Date of the instruction to quote
Submit a revised quotation	62.4	3 weeks	Date of the instruction to revise
First programme, where none is named in the Contract Data	31.1	As stated in the Contract Data	Contract Date
Revised programme when instructed	32.2	As stated in the Contract Data	Date of the instruction
Next regular revised programme	32.2	As stated in the Contract Data	Date of the last revised programme
Correct a notified Defect	44.2	As stated in the Contract Data	The date the period starts: see the note

Project Manager

Step	Clause	Time	The clock starts at
Reply to a notified compensation event	61.4	1 week	Date the Contractor notified the event
No reply to a notified event: treated as accepted	61.4	2 weeks	Date the Contractor notified the failure to reply
Reply to a quotation	62.3	2 weeks	Date the quotation was submitted
No reply to a quotation: treated as accepted	62.6	2 weeks	Date the Contractor notified the failure to reply
Notify your own assessment	64.3	3 weeks	Date it became clear your own assessment was needed
No reply on an assessment: treated as accepted	64.4	2 weeks	Date the Contractor notified the failure
Reply to a programme submitted for acceptance	31.3	2 weeks	Date the programme was submitted
No reply to a programme: treated as accepted	31.3	1 week	Date the Contractor notified the failure to reply
First Early Warning Register	15.2	1 week	Starting date
First early warning meeting	15.2	2 weeks	Starting date
Revised register after an early warning meeting	15.4	1 week	Date of the meeting
Certify a payment	51.1	1 week	Assessment date
Certify Completion	30.2	1 week	Date of Completion
Final assessment after the Defects Certificate	53.1	4 weeks	Date of the Defects Certificate
Final assessment after a termination certificate	53.1	13 weeks	Date of the termination certificate

Project Manager or Contractor

Step	Clause	Time	The clock starts at
Any other reply (the period for reply)	13.3	As stated in the Contract Data	Date the communication was received

The paying Party

Step	Clause	Time	The clock starts at
Make the certified payment	51.2	3 weeks	Assessment date
Pay less notice (Option Y(UK)2)	Y2.3	7 days before	Final date for payment

The steps marked "treated as accepted" only start once the Contractor has notified the failure to reply. Read time bars for what happens if a date is missed.