Duty of Fidelity
35During their employment with Charltons, Fitzgerald, Kishore and Prasad were subject to an express contractual duty of fidelity. Clause 3.1 of the Terms of Employment required them to 'well and faithfully serve [the plaintiff] and use your best endeavours to promote the interest and welfare of [the plaintiff].
36A term to similar effect is implied by operation of law in every contract of employment unless it is directly or indirectly excluded. It obliges the employee to render faithful and loyal service to the employer and to avoid conduct incompatible with the continuing relationship of trust and confidence between them: Shepherd v Felt and Textiles of Australia Ltd (1931) 45 CLR 359 at 370, 372, 391, cited in Blyth Chemicals Ltd v Bushnell [1933] HCA 8; (1933) 49 CLR 66 at 81-82 (Dixon and McTiernan JJ); see also Concut Pty Ltd v Worrell [2000] HCA 64; (2000) 103 IR 160 at [57] (Kirby J).
37The breadth and generality of the duty of fidelity was encapsulated in the statement of principle in Blyth Chemicals Ltd v Bushnell at 81-82 where, in addressing the circumstances in which summary dismissal is justified, Dixon and McTiernan JJ said:
Conduct which in respect of important matters is incompatible with the fulfilment of an employee's duty, or involves an opposition, or conflict between his interest and his duty to his employer, or impedes the faithful performance of his obligations, or is destructive of the necessary confidence between employer and employee, is a ground of dismissal ... But the conduct of the employee must itself involve the incompatibility, conflict, or impediment, or be destructive of confidence. An actual repugnance between his acts and his relationship must be found. It is not enough that ground for uneasiness as to future conduct arises.
38The contractual duty of fidelity, whether express as in Clause 3.1, or implied, prevents an employee from undermining the employer's business, such as by soliciting or procuring the employer's customers and employees, diverting the employer's business opportunities to their own business, or setting up, operating or assisting a business which competes with their employer: Blyth Chemicals v Bushnell at 81-82; Wessex Dairies Ltd v Smith [1935] 2 KB 80 at 87-89; Schindler Lifts Australia Pty Ltd v Debelak (1989) 89 ALR 275 at 300; Goodchild Fuel Distributors Pty Ltd v Holman (1992) 59 SASR 454 at 477-481 and 484-485; Digital Pulse Pty Ltd v Harris [2002] NSWSC 33; (2002) 166 FLR 421 at [20] - [23] (not relevantly reversed on appeal in Harris v Digital Pulse Pty Ltd [2003] NSWCA 10; (2003) 56 NSWLR 298); Dinte v Hales [2009] QSC 63 at [22] - [26].
39In this case, there is no need to resort to the implied duty of fidelity. The express contractual obligation in Clause 3.1 of the Terms of Employment, achieves the protection which the plaintiff seeks, and the implied duty adds nothing. An implied term should only be found if, among other things, it is 'necessary'. See Australis Media Holdings Pty Ltd v Telstra Corporation Ltd (1998) 43 NSWLR 104 at 124 (CA).