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LETS is the time and attendance system for Lawrence Berkeley National Laboratory. LETS allows employees to enter time worked and supervisors to review and approval time.

LETS can be accessed at

Employee Training & Resources:

Approver Training & Resources:

Timekeeper Training & Resources:

Sweep Dates:

Biweekly paid employees:

  • The 1st business day of each week at 10:00 AM (unless specified otherwise); and,
  • The 1st business day of the month at 10:00 AM.
  • Please refer to the weekly sweep schedule.

Monthly paid employees:

If there are any changes to the published sweep schedule, (holidays, fiscal year end, or annual Lab shutdown) the Sweep Dates link in LETS will be updated and an email will be sent out advising of the change. 

Contact Us:

LETS or Payroll questions:  Submit a ticket via AskUs.

LBL account and password issues: LBL password site or call Help Desk x4357

Deadlines for Time Certification Reports Checklist Entries:

Employees and Approvers should provide their signed signature required reports to their timekeeper no later than the 10th of the following month. 

Timekeepers must acknowledge receipt of the signed signature required reports in LETS no later than the 15th of the following month by 5:00 PM. 

If the 15th of the month falls on a weekend or holiday, the deadline will be extended to the next business day at 5:00 PM. 

Functional Owner:

 Office of the Chief Financial Officer, Controller's Office, Payroll

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