Disruptive action by Police Scotland officers is set to continue after pay negotiations ended without a deal.
Police north of the border withdrew "all goodwill" on July 1 in protest at what they described as a "derisory" £565 pay rise, a move which meant rank-and-file officers are currently refusing to start shifts early or take radio equipment home when their shift ends.
Talks between the Scottish Police Federation (SPF) and the Police Negotiating Board, which deals with pay for Police Scotland, continued on Monday but ended without an agreement, the SPF said.
Calum Steele, its general secretary, said discussions had represented a "positive development in the relationship between our respective sides" but "whilst our sides have come closer together a gap between our individual positions remains to be bridged".
By law police officers are not allowed to strike, and as part of the withdrawal of "all goodwill" officers are submitting overtime claims for things they do in their own time such as turning up before a shift for briefings and charging vital equipment at home.
The action has been described by the union as the "most overt demonstration of action by our members in over 100 years" and was being taken because of "the derisory pay offer made to our members".
Mr Steele, in his letter to members on Monday, said: "Our sides have agreed to separately consider some of the more technical aspects of each other's asks, and will seek to do so over the next week to 10 days, with a view to returning to formal further negotiations as soon as possible thereafter."
Mr Steele said that their actions had a "considerable influence on the resumption of negotiations" and urged his members to maintain their commitment and make sure their "collective resolve is not allowed to waver".
A Police Scotland spokesman said the force was "committed, through the Police Negotiating Board, to seeking a settlement".
"We are monitoring the situation in relation to the withdrawal of goodwill. We will put arrangements in place to ensure any impact on the public is kept to an absolute minimum," the spokesman said.
"We recognise the considerable goodwill officers bring to their roles on a daily basis as they keep people safe across the country, and this is also valued by the communities they serve."
Don't miss the latest news from around Scotland and beyond - Sign up to our daily newsletter here.
