Leading zero(s) in AD attribute gets removed in powershell script

The Active Directory Attribute 'otherHomePhone' is used as an employee ID which can contain leading zeros.  It seems the leading zero's get truncated.  For example: If the employee ID is 003421, the output file has 3421.  Any suggestions?

import-module activedirectory
Get-ADUser -Filter {(ObjectClass -eq "user")} -Properties Mail,otherHomePhone  | 
Select-Object GivenName,Surname,userPrincipalName,mail,@{n="otherHomePhone";e={$_.otherHomePhone[0]}} | 
Export-Csv -NoType "jper263a.csv"
Copy-Item d:\Scripts\PeopleSoftADExport\jper263a.csv \\addfsdev01\bjsdev\VOL1\ADexport

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