Either the standard grievance procedure or the modified grievance procedure would apply and the action on which the grievance is based:
occurs entirely before 6 April 2009; or
begins on or before 5 April 2009 and continues beyond that date and the employee presents a complaint to an employment tribunal or submits a valid written grievance:
on or before 4 July 2009 for claims with a three-month time limit;
on or before 4 October 2009 for claims with a six-month time limit (claims for equal pay, statutory redundancy pay, and anything to which section 238 of TULRCA applies).
(Schedule to the Employment Act 2008 (Commencement No. 1, Transitional Provisions and Savings) Order 2008 (SI 2008/3232).)