Longest current tenure

Longest current tenure in Premier League
Manager Days
Mikel Arteta (Arsenal) 2356
Eddie Howe (Newcastle United) 1669
Unai Emery (Aston Villa) 1311
Daniel Farke (Leeds United) 1066
Oliver Glasner (Crystal Palace) 836
Régis Le Bris (Sunderland) 703
Fabian Hürzeler (Brighton and Hove Albion) 702
Longest current tenure in Championship
Manager Days
Phil Parkinson (Wrexham) 1799
Kieran McKenna (Ipswich Town) 1631
John Mousinho (Portsmouth) 1231
Nathan Jones (Charlton Athletic) 851
Chris Davies (Birmingham City) 728
Paul Heckingbottom (Preston North End) 653
Frank Lampard (Coventry City) 553
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 2036
Richie Wellens (Leyton Orient) 1548
Johnnie Jackson (AFC Wimbledon) 1480
Grant McCann (Doncaster Rovers) 1119
Graham Alexander (Bradford City) 941
Alex Revell (Stevenage) 778
Gary Bowyer (Burton Albion) 534
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 6223
Andy Woodman (Bromley FC) 1893
Dean Brennan (Barnet) 1718
Paul Cook (Chesterfield) 1575
Lee Bell (Crewe Alexandra) 1308
Micky Mellon (Oldham Athletic) 965
David Artell (Grimsby Town) 920

  The longest managerial reign of all time in the English football league belongs to Fred Everiss, who was manager of West Bromwich Albion for over 45 years (from 1902 to 1948)